The same ratchet as the RMT Tactical on a wider band — know which of the two your protocol asks for before you stage it.
At a glance
10 things to know about the RMT Wide
What the extra half-inch changes, what the volunteer data show, and where it stands with the evidence-based.
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01
m2®'s 2 in. Military/Law model
m2® builds three Military/Law RMTs — Tactical, Paramedic and 2 in. This one runs 2 in. (50 mm) coyote webbing through a 1 in. ratcheting buckle and ladder strap.3,4 m2® introduced the 2 in. model with its 26th generation in January 2014.4
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02
It is not the RMT on the evidence-based list
The evidence-based's list of recommended limb tourniquets names the RMT Tactical — the 1.5 in. model — and not the 2 in. Wide.2 The Committee's 2019 review covered the RMT Tactical, the TX2 and the TX3 as the m2®-design ratchet tourniquets.7 Absence from the list does not by itself mean a device was tested and failed; if your protocol requires a evidence-based standard tourniquet, the RMT Tactical is the m2® model that meets it.
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03
A wider band did not lower thigh occlusion pressure in volunteers
Wider tourniquets are expected to close the artery at lower pressure. In 16 volunteers, the Wide occluded the thigh at a median 259 mmHg against 256 mmHg for a single Tactical, and the arm at 212 against 230 mmHg. Two Tacticals side by side — 3 in. of total width — occluded at the lowest pressures of all.8
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04
Coarser ladder, bigger clicks
The Wide's ladder carries 2 teeth per centimeter against the Tactical's 2.5. One more tooth past occlusion added a median 51 mmHg on the thigh and 63 mmHg on the arm, against 40 and 49 mmHg for the Tactical8 — fewer, larger steps of adjustment.
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05
Pressure fades — reassess
Over two minutes, pressure under the Wide fell by a median 43 mmHg on the thigh and 26 mmHg on the arm. Every tourniquet in the series lost pressure; the occlusion losses that occurred came with single-Tactical and paired applications.8 Check every tourniquet again after it is on.
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06
A ratchet, not a windlass
No rod to twist and lock. Each lift of the buckle's arm advances it one tooth along the ladder and the buckle holds there by itself. m2® describes the system as self-locking, applied with one hand and gross motor skills, and confirmed by an audible ratcheting sound.3
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07
Two steps printed on the webbing
"1. PULL TIGHT" and "2. LIFT" are printed on the strap. Release is a finger under the tab labeled "LIFT TO OPEN" and a strong lift.3,5
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08
Five ounces, and it folds
The 2 in. RMT weighs 5 oz (142 g) and folds to 4.4 × 2 × 2.5 in. for staging.3
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09
One color
m2® makes the 2 in. RMT in coyote/tan webbing only.3 m2® registers and lists its RMTs with the FDA as Class I nonpneumatic tourniquets, exempt from 510(k).6
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10
What studies of the RMT in untrained hands found
In a trial of 176 untrained adults given only the packaging instructions, those assigned the RMT applied it effectively 64.4% of the time — the best of four tourniquets.9 In 198 untrained adults, success was 23.4% with the RMT, 16.9% with the C-A-T and 10.6% with the SWAT-T, not a significant difference, and every device failed far too often.10 Those studies tested an RMT, not the 2 in. Wide specifically. No tourniquet replaces training.
How to apply the RMT Wide
Placement first, then m2®'s pull-and-lift sequence, in order.
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1Pick the placement. Under fire, or when you cannot see where the blood is coming from: hasty — high and tight on the limb, as close to the body as you can get it, over the clothing. When time and safety allow and you can see the source: deliberate — on bare skin, 2–3 in. above the wound, moving above the joint if that spot lands on one. Never across or directly over a joint.1
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2Get it around the limb. Place the tourniquet around the injured arm or leg.5
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3Pull tight. Grab the loop and pull the webbing tight to take out the slack before you start ratcheting.5
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4Lift to tighten. Lift the buckle's ratcheting arm, again and again, until the bleeding stops and the pulse below the tourniquet is gone.1,5 It hurts. That is expected.
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5Still bleeding? Add a second. If one tourniquet does not stop it, apply a second tourniquet side-by-side with the first.1
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6Mark the time. Write the time of application on the tourniquet and on the casualty card with a permanent marker.1
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7Reassess, then decide on conversion. Recheck the bleeding and the pulse once the scene allows, and convert a hasty tourniquet to a deliberate one: a second tourniquet on skin 2–3 in. above the wound, tightened, then the first loosened. If the source still cannot be found, it stays high and tight.1
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8Release only when removal is the plan. Put a finger under the "LIFT TO OPEN" tab and lift strongly.5
Where it fits
- Life-threatening bleeding from an arm or a leg that a tourniquet can reach1
- Any traumatic amputation, even one that is barely bleeding — adrenaline clamps the arteries down, and when it wears off they open and the bleeding starts
- A second tourniquet side-by-side when one is not enough1
- Gloved, cold or shaking hands — a lift of the arm instead of fine rod work3
- Kits that must hold a evidence-based standard tourniquet — carry the RMT Tactical or another listed model there
- The groin, armpit or neck — those wounds are packed with hemostatic gauze or controlled with a junctional device
- Across or directly over a joint, in either placement
- Children 2 and under — direct pressure or a pressure wrap is the better tool
The evidence
Every study cited above, what it tested, and how strong the evidence is.
| Study | Evidence type | What was studied | What it found |
|---|---|---|---|
| Wall et al., J Spec Oper Med 2016 | Human volunteer | Wide RMT (5.1 cm) vs single and paired Tactical RMTs (3.8 cm), 16 recipients, 96 applications | All occluded; Wide median 259 mmHg thigh, 212 mmHg arm; larger final-tooth jumps; pressure fell under all within 120 s |
| Montgomery et al., J Spec Oper Med 2019 | Expert review · evidence-based | evidence-based limb tourniquet review that set the current list | Covered the RMT Tactical, TX2 and TX3 as the m2®-design ratchets; the RMT Tactical was added in 2019 |
| Portela et al., Acad Emerg Med 2020 | Simulation · laypeople | 176 untrained adults, packaging instructions only, simulated bleeding arm; SOFTT-W, C-A-T, RMT, SWAT-T | RMT highest effective rate (64.4%) and fastest (100.9 s) |
| Ross et al., J Emerg Med 2018 | Simulation · laypeople | 198 untrained adults randomized to C-A-T, m2® RMT or SWAT-T | Success 16.9%, 23.4%, 10.6% (p = 0.149); failure rates unacceptably high for all |
Only the volunteer study tested the 2 in. Wide itself. The lay studies tested an RMT and point the same way for every device: untrained hands fail too often.
How it compares
The 2 in. ratchet against its evidence-based standard neighbors.
| RMT Wide 2 in. | RMT Tactical | TX2 | C-A-T® Gen 7 | |
|---|---|---|---|---|
| Maker | m2® Inc. | m2® Inc. | RevMedx | North American Rescue |
| Tightening system | Ratchet — 1 in. buckle on a ladder strap | Ratchet — 0.75 in. buckle on a ladder strap | Ratchet on a polymer ladder | Windlass rod, secured after tightening |
| Band width | 2 in. (50 mm) | 1.5 in. | 2 in. | 1.5 in. |
| Weight | 5 oz | 3.6 oz | 0.2 lb packaged | 2.7 oz |
| Self-securing | Yes — each click holds | Yes — each click holds | Yes — each click holds | No — rod and strap are secured as separate steps |
| evidence-based standard | No | Yes — RMT Tactical | Yes — TX2 | Yes — C-A-T Gen 7 |
| NSN on the evidence-based list | — | 6515-01-527-3841 | 6515-01-667-6027 | 6515-01-521-7976 |
RMT weights are m2®'s device figures; the TX2 weight is RevMedx's packaged figure; the C-A-T weight is from the evidence-based's 2019 review.3,7,11 Absence from the evidence-based list does not by itself mean a device was tested and failed.
Build the system
The evidence-based standard ratchet and windlass tourniquets, a trainer, and what goes in the kit beside it.
Questions buyers ask
Package & specifications
Available Options:
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Specifications coming soon. Contact us for detailed product information.
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