Features:● Carbide Rotary Burrs Bits widely used in machining iron,steel casting,carbon steel,alloy steel,stainless steel,hardened steel,copper aluminium etc.● Ideal for cleaning up welds, grinding weld beads, shaping parts, smoothing rough castings, or porting cylinder heads.● Long Double Cut Solid Carbide Burr, for metal working inmold and patternmaking, die sinking, surface cleaning and maintenance.Warm Tips:⚠ Ensure your burr shank is well inserted into your collet and clamped down tightly.⚠ Please wear an eye mask to protect your eyes from filings.