Pocket-size. One size fits all. No inserts, spacers or adjustments at all! Easy loading; the rounds just drop in with no thumb pushing or pressing No more pain! Load hundreds of rounds painlessly Protects your fingers and mags Up to one round per sec. loading rate. 1/3 the time loading several mags with thumb Highly durable The UpLULA is a military-grade, pocket-size, universal pistol magazine loader and unloader designed to load and unload virtually all 9mm Luger up to .45ACP single and double stack magazines of all manufacturers. It also loads most .380ACP single and double-stack mags, and 1911's mags. The UpLULA loader does it all easily, reliably, and painlessly! 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 single and double-stack mags.