6 pieces pack. 1-1/2"(38mm) long. Made of tough alloy casting steel.
Pinch dogs are used for assembly and for clamping. Traditionally, they were used by upholsterers as all-purpose gluing clamps. Regardless of the shape of the two pieces, as long as the dog was tapped in across the glue line, it would hold everything tight until the glue set.
Patternmakers used them for column assembly. Cabinetmakers used them for assembly, clamping and jigging.