The Stec hand lifts are made of aluminum alloy, with carbon steel parts, and have a rubberized grip that improves ergonomics. It is available in different colors, orange for the left hand and blue for the right hand. Its locking system works even in extreme conditions of dirt and/or humidity. The Hand Ascender works on ropes from 8 to 12 mm in diameter. When pushed in the direction of the arrow, it slides and when pulled, its system locks. Its working load is 4100kg and its breaking load is 4kN. Stec hand lifts are used for rope progression, easy to install. It can also be used as a blocking element in force reduction systems.