HKS Magazine Speedloaders for centerfire calibers feature a rugged, comfortable, thumb activated cam-lever system that lets you load a 15-round magazine in 18 seconds or less. Rimfire Speedloaders depress and lock the magazine follower in the down position for easy loading.Fits: Colt large frame single stack magazines - 9mm, 38 Super, 40 SW, 10mm, 45 ACPLlama, Ruger P-90, Safari Arms, Sig Sauer 220, 239, 245Smith & Wesson single stack magazines - 40 Smith & Wesson, 10mm, 45 ACPStar Firestar 40 CaliberTaurus PT945