GUN STAPLES ONLY 1/2" ARROW.This product is a set of 1250 clamps made of galvanized steel with measurements equal to 1/2 in leg length and 3/8 in crown length. Its characteristics make it ideal for both light and heavy work. That is, it's perfect for attaching insulation, window screening, upholstering, carpet padding, and fence wiring. It is also durable and compatible with Arrow, Craftsman, Stanley, PowerShot, Black & Decker and Ace staplers.