Why load your revolver one cartridge at a time? With one slight twist, the HKS Speed Loader instantly loads all six cartridges into nearly any revolver. The principle is simple: Strong metal points hold cartridges securely in the loader until you release them into the revolver with a turn of the speed loader knob. Product Specifications Caliber: .38/.357 Manufacturer: HKS Fits: Smith and Wesson 36/37/38/40/42/49/60/340/360 Charter Arms Taurus: 85/605/651/851 Rossi: 68 Ruger: SP101