Rescue Tech D4 Belay/ Descender, 10.5-11mm (Black)

Special descender/belay device that easily controls 500 lbs loads. The side plate closes with a low-profile, spring-loaded safety catch. Simple, functional design. It can be placed onto the rope without removing the rigging carabiner. Rotate the handle counter-clockwise to lock it in place. Rotate right to descend or lower load. Rotating the handle too far clockwise will engage the panic stop function. Continued clockwise rotation re-sets the unit. The D4 is a true panic stop device rather than a panic brake device. The difference is that once the panic stop is activated, no other force must be applied to the device. A panic brake-style device requires a force input to continue the braking function. It can be used for progress capture in hauling systems and allows rapid conversion between raising and lower. For 3/8″ – 7/16 (10.5 – 11.5mm) ropes. See the D5 for use with 1/2″ ropes.