One-handed installation LOCKING Type! If you have ever struggled with a non-locking type of cushioned loop clamp, you will really appreciate these. This unique type of Cushion Clamp, made for the Aircraft/Aerospace Industry, is easy to install as they are a special design of ADEL/UMPCO type of loop clamp that you don’t have to struggle with. Once you have the clamp locked around a line, wires or whatever, just install it! See Clamp in front of photo showing one in “Locked” position! These also have the extra “WEDGE” that, when closed, will not pinch the wires when closed. Boeing Aircraft part number ST9M588WDF12 Cushioned 3/4” Loop Locking Clamps are made of Nitrile that is also fuel resistant. 20 each in new surplus condition.