CMC Rescue


Our new 3D locking-bar descender delivers the ultimate in safety, control and performance, in one compact and lightweight device. The 3D features two sliding bars for optimum friction control and efficiency. The horn design works well with 13mm rope and smaller, making it easy to add or subtract friction as needed throughout the evolution. The frame dimensions allow for larger rescue-sized carabiners to be used without any contact or friction with the rope. The descender can be loaded or unloaded while connected to your harness for rappelling or to an anchor for one- or two-person rescue lowers.

  • Compact, lightweight design
  • 3-stage locking center bar for added safety
  • Ambidextrous design allows loading from top or bottom or controlling descent from either side of device
  • Optimal rack length allows two rescue-sized carabiners to be attached without rope contact or friction from carabiner
  • Large horn size allows for easy addition or subtraction of friction, even on larger 13mm lifeline
  • Personal descender or used for one person or two-person rescue lowers
  • Simple to lock off device on either side
  • Straight feed design does not put twists in rope
  • Allows attachment of rope while device is connected to a harness or anchor
  • 100% aircraft-grade aluminum and stainless steel components
  • Made in USA, of foreign and domestic components
  • Patent-pending


About CMC Rescue’s Super Black Finish
Our 3D, Rescue Rack and Rescue 8 products feature an exceptionally long-wear proprietary finish because typical hard or soft anodizing on aluminum descenders eventually wears through. The finish also prevents transfer of material to the rope, common with bare aluminum components. After years of heavy use, our products and test samples with our Super Black Finish continue to be used in CMC Rescue School classes without showing any indication of the surface wearing through.

3D: A new Dimension in Descending


Using the 3D as a Descent Device and Rappel Application


Using the 3D as a Lowering Device

item # 300880
Product Name 3D, CMC
Product Weight 1.1 LB (481 G)
Dimensions 7” L x 4” W x 1-1/4” H (178 x 102 x 32 mm)
Rope Size (Diameter) 1/2 in (13 mm) / 3/8-1/2 in (9.5-13 mm)
NFPA RATING General Use / Technical Use
3 SIGMA MBS 22 kN (4,946 lbf) / 13.5 kN (3,035 lbf)


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