These 1/4"-20, stainless steel, double-ended setscrews are 0.63" long and are designed to be easily removed from posts or mounts. With a hex socket on both ends, extraction is straightforward and simple, eliminating the need for pliers and the frustration of stuck screws. They are sold in packs of 10. The unpackaged weight of one of these set screws is 2.27 g.