ProMag's pistol magazine loader for Glock 9mm & .40S&W double-stack magazines has top dimensions of 1-5/16" x 1" and smaller. It is constructed of an injection-molded, glass-filled, black-polymer.A magazine loader for the Glock 9mm and .40 S&W double stack magazines with top dimensions of 1-5/16 x 1 inches and smaller. Constructed of an injection molded black polymer. Features: 9mm and 40 S&W double stack magazines with top dimensions of 1-5/16 x 1 inches and smaller Made of injection molded black polymer Made in USA