These Snap clamps use a unique snap-on system to provide uniform and positive clamping in one smooth operation. As the handle is moved upward, the internal mechanism works to build tension. At a specified point, the tension is released and transformed into clamping force. This allows uniform clamping force with every cycle. The one piece body offers excellent durability and will not become weak or unstable after repeated use like traditional toggle clamps. They are ideal for small part clamping and where space is limited. Designed for fingertip handle operation. Supplied with a steel spindle, although urethane tip style spindles are also available. The body is made from 1045 alloy steel with a black oxide finish. The clamping arm and handle are made from 4140 alloy steel with a black finish.