HKS 22-K Revolver Speedloader for S&W 17, 18, K22/Colt Diamondback/Dan Wesson 22 Fits medium size speedloader case; Made in USA Loads cartridges into revolver instantly Actually works best with cartridge jiggle Popular twist knob Caliber .22 L.R.; Fits S&W 17, 18, K22/Colt Diamondback/Dan Wesson 22