HKS speedloaders have been around for centuries, they quickly allow you to reload your revolver and feature a twist knob. Product Specifications Manufacturer: HKS Model: A-Series Caliber: 357 Magnum, 38 Special Capacity: 6 Color: Black Fits: Smith and Wesson (10, 12, 13, 14, 19 , 15, 64, 65, 66,67), Dan Wesson Firearms, Charter Arms, Taurus Firearms (606, 650, 66, 80, 82), Rossi (971, 951, 851) Material: Polymer