Carving Clamps: Essential for Instrument Making These clamps are indispensable for accurately attaching carvings in stringed instrument making and other instrument construction. Designed to apply optimal pressure to the carving, they exert nearly even pressure at two points on the carving. While conventional clamps only apply pressure at a single point, these clamps distribute uniform pressure across the entire reinforcement. They are ideal for all types of chain stitches, including hard-to-grip triangular carvings. Each bag contains 10 clamps, and there are two bags, totaling 20 clamps. These are unused items that have been stored for a long time.