This Is An Open-On-Impact Head With Mechanical blades That Fold Open From The Front To a 1-3/8" Cutting Diameter. Weighted collars Convert The 100-Grain heads To 125 grains And Are Included With Each Pack. The Entire trocar Tip, Aka Trocrazor, Is replaceable And contains Three Removable/replaceable .015" Thick 440C Stainless Steel blades.
