The Hand-Tripped Grab (Hand-Pull) has a mechanism, which has one rope for lifting/lowering the grab from the crane and one rope to open the grab manually (pulled by hand) by an additional operator on the ground, pulling it at discharge destination (mid-air opening).

This system is prefered, if at discharge destination, timing is important and/or an exact manual adjustment of the grab is required. One additional staff is always required to unload grab.