• Loads all 9mm Luger, .357 Sig, 10mm, .40, and .45ACP cal. single and double stack magazines., including 1911 mags, of all manufacturer, and also loads most .380ACP double-stack mags• One size fits all• Easy loading; the rounds just drop in with no fingers pushing or pressing them• Load hundreds of rounds painlessly• Protects your fingers and mags• Up to one round per sec. loading rate• Fits in hand and pocket, weighs only 66 grams• Highly durable