Get loaded quicker with Hilljak's Quickie Loader QL457 designed exclusively to fit CZ 457, 512, 452, 455, 453 and Savage Mark II, 501, 504, 900 Series magazines. Fits 22LR, 22WMR and 17 HMR magazines. Loading 22LR can really be painful and frustrating. Their QL457 will help save your fingers from the pain and help you to load more efficiently, so you can keep your fingers fresh and focus on improving your shooting skills at the range. Used by competition shooters and great for new gun owners as well. Designed and made at Hilljak USA of 3D printed bio-polymer plastic