This nose assembly installs 5/16" Magna-grip lockbolts used to install truck cab body panels. It is compatible with Huck 225, 226, 245, 246, 256, Gage Bilt 745, 756, RAT1100 and 3213 lockbolt tools. These imported noses have several quality features including, tool steel anvils and chrome molly-jaws hardened to Rockwell C60. The anvils have a black anodized finish and a laser engraved picture on each nose of the intended fastener to help users with nose selection. The independent jaw design keeps costs lower compared to unitized jaw model types. These noses have performed as well as most major USA made brands because the maker also manufactures lock bolt fasteners and they build noses very well.