The ProMag LDR04 Pistol Mag Loader is specifically designed for Glock double stack magazines in 9mm and .40 S&W calibers. This loader supports magazine dimensions of 1 5/16" x 1" and smaller, facilitating quick and efficient loading.Key FeaturesCompatible Models: Works with Glock 9mm and .40 S&W double stack magazines.Material: Constructed from durable black polymer for long-lasting use.Made in the USA: This product is manufactured in the United States, ensuring quality and reliability.