Safe and simple to use with one only hand! BACK-UP is the new KONG fall arrester that fol-lows the operator in both directions and stops the possible fall. Shifting the special button on the lock mode, it can be used also as a positioning device or a normal locking device. The Back-Up supports a fall factor 2 in a semi-dynamic way. Moves up or down along the rope without manual intervention. Includes Kong Steel Oval auto locking carabiner. Use with ropes from 3/8 1/2 (10 12mm). Meets ANSI Z359.1-2007 and OSHA requirements when used with a lanyard under 16 (40cm). Weight 7 oz. (205g). Made outside US.