Lots of clamps for boat builders! CLAMP-IT is so simple yet more indespensible than a paper clip. It works on the principle of a clothespin. Normal clamping is done with about 1/8th inch pre-load and is a one-handed operation. The gap can be changed from zero to 1 3/8 inches by bending with your fingers (10# force required). Try them - you'll be glad you did!