JAWS Prehensors

JAWS Prehensors

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JAWS come in two models. The original size and a medium version for individuals with smaller stature or who might just prefer a lighter, more compact terminal device. JAWS are the answer for many of the challenges that a person with a hand absence face. JAWS are unique and powerfully functional. JAWS are heavy duty, voluntary opening, prehensile-style, terminal devices. JAWS can be used with or without a cable harness system for versatility. JAWS can be mounted to a “myo” or electric arm with a special myo to body powered adapter. JAWS were conceived by amputee Bob Radocy, VP of Fillauer TRS Inc. Bob kept receiving inquiries from persons missing a hand, especially those using “myo” or electric hands frustrated with the electric technology’s performance but not wanting to go full voluntary closing, body power with a harness system. These individuals wanted to hold tools, handles, ride ATVs and snowmobiles, as well as other “off road” and “on water” vehicles like jet skis. Additionally, there was a need to safely control and steer drivable farm and ranch equipment. JAWS were conceptualized with these needs “in mind” and over a period of two years was designed and developed. The uses for these JAWS devices are endless.

JAWS uses “Vector” mechanics and technology. Vector technology was championed by Dr. Lawrence Carlson beginning in the 1990s into the 2000s. Dr. Carlson is a professor emeritus of mechanical engineering from the University of Colorado at Boulder. Vector technology allows the grip force of the prosthesis to be easily adjusted in force by changing the direction through which the spring force acts. This adjustability provides significant versatility, as well as the ability to achieve much higher gripping forces than are available in most voluntary opening terminal devices. Bob, who has worked closely with Dr. Carlson on the vector technology, took the concept and embedded it into JAWS. Combining the vector technology into heavy duty gripping terminal devices proved to be the perfect “match” of concepts. Now is your chance to EXPERIENCE JAWS TECHNOLOGY!

*JAWS XFS – JAWS (Original size) is now also available with a heavy-duty spring option, JAWS XFS (Xtra Force Spring). The JAWS XFS comes with a Main Spring which has nearly 40% more force than the stock spring.

*Note: JAWS XFS is only intended for users who need extremely strong gripping forces. JAWS XFS should be used with extra caution, especially in the highest force position, because “releasing the grip” has an extremely high threshold. Additionally, if operating the JAWS XFS with a traditional cable system it may cause premature wear and possible failure of the cable system due to the extra force required to operate the TD. Standard JAWS TDs can be retro-fitted with the XFS Spring option. Please contact us for details.

*Check out the Jaws XFS in action in the Product Video section!


  • • “Vector technology”… variable gripping force.
  • • “User” controlled, simple shift lever adjustment.
  • • Cable operated or manually operated.
  • • Snaps “On and Off”. Never locks!
  • • “Heavy Duty Performer” for excellent control
  • • Perfect for shovels, rakes, tool handles
  • • Exceptional freedom and control for work vehicles, “OFF Road” vehicles and activities like ATVs, Snowmobiles, Motocross, Trail Riding, Mountain Biking & Jet Skiing.
  • • Winter friendly! Water friendly!.
  • • Replaceable flexible shaft simulates wrist action.
  • • Mounts to all mechanical, USA prosthetic wrists.



  • • Made in the USA!
  • • “L Code” L6721 & L6620



Purchase Options

All TRS products, including videos, parts and accessories are available from professional, certified prosthetic facilities. Additionally certain medical clinics and rehabilitation hospitals have prosthetic departments through which TRS technology is available.

*All orders will be processed in the order they are received. Most in stock orders will ship within 1-3 days of the order date. If you have any questions, please feel free to contact customer support. We appreciate your business and are doing our best to ship all orders on time.

Persons interested in comprehensive prosthetic service and care should always utilize the services of a certified prosthetist. Prosthetic facilities handle the coordination of your personal health insurance coverage, conduct billing for services and facilitate “Clinical Trials and Field Evaluations” of TRS products. Importantly these facilities and professionals ensure that your prosthetic technology and hardware is totally compatible, properly installed and aligned for optimal operation. TRS can help with referrals to certified prosthetic facilities that are familiar with TRS technology, in your area.

*A restock fee of 10% will be issued on all returns unless a substitute product is purchased. A 25% restock fee will be issued on all Grip 5 and Ener-Joint returns.

Hours of operation:
Monday-Thursday 7:30am-4:00pm MST
Friday 7:30am-12:00pm MST

Closed Holidays: New Year’s Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and the day after, Christmas Day.

General: (800) 279-1865

Direct Sales Program

TRS offers direct limited retail sales to consumers on specialized products (Listed below). Sports and recreational products and accessories and specific replacement parts are available directly from TRS. TRS does not bill insurance companies and all sales under this program are final. Products sold under this TRS Direct program cannot be returned. TRS accepts MasterCard and VISA payments.

Below are a list of products available directly from TRS:

Barrage Cobra(s) Ski TD’s Dragon Helix Hoopster
ISHI Jump Rope Lamprey Mountain Master Multi D Power Play
Raptor Swinger Golf Eagle TD Golf Pro Grand Slam Hi Fly Fielder
Pinch Hitter Freestyle Swim Amp-U-Pod Hustler Guitar Violin
Drum Slap Shot Black Iron Lite Black Iron Master Black Iron Trainer Rebound
Criterium Shroom Tumbler Bike Brake Kahuna Surf Swim T.D. Hammerhead
Replacement GRIP 3 GRIP Device Rebuild



TRS products are available in Canada through a distribution arrangement with Myrdal Orthopedic Technologies (MOT) of Winnipeg, Manitoba. MOT serves prosthetic and orthotic facilities throughout Canada and stocks a broad variety of TRS products. MOT coordinates the “Customs Clearance” required on prosthetic goods imported into Canada.

MOT Toll Free In Canada 877.395.0081


TRS also can sell to consumers who prefer a direct relationship and have the financial means to purchase via M/C or VISA. Customs clearances, Customs fees and VAT are the responsibility of the purchasing customer.


Fillauer Europe distributes TRS products throughout Scandinavia, the UK and many European countries. Fillauer Europe network and contacts in Europe are:

UK Ortho Europe & Steeper
Holland & Belgium Loth Fabenim, Nettie van Velzen [email protected]
France OKO Solutions SAS, Alexandre Okorokoff, [email protected]
Germany Ortho Neuhof
Spain & Portugal EMO, Leopoldo, [email protected]
Switzerland FREY
Italy Simona Rosa, [email protected]
Austria Ortho Neuhof
Denmark, Sweden Fillauer Europe
Norway, Finland Fillauer Europe


TRS is seeking stocking distributors in countries not currently served by our current distributors. Contact Bob Radocy directly at [email protected] to open up a dialogue about what may be possible.

TRS offers a generous, one time, discount program for new distributors enabling the purchase of a complete line of production quality samples.


TRS can sell product directly to consumers outside the USA, via M/C or VISA. Customs clearances, customs tariffs, etc. are the responsibility of the purchasing customer. Make inquiries to:


TRS – Therapeutic Recreational Services
3090 Sterling Circle, Studio A,
Boulder, CO 80301

Phone 303.444.4720
Fax 303.444.5372

Bob Radocy, President
[email protected]

Linda Martin
[email protected]

Client Testimonials

TRS shipping is closed on the last two business days in June and December for inventory purposes. All orders received on those days will be processed after inventory is complete on the first business day in July and January.