Contains extra cobalt HSS tooth material for enhanced heat and wear resistance along with a 5.5tpi positive rake tooth design with extra gullet volume to ensure a smoother and faster cut in stainless steel, metals and mild steel sheet with a wall thickness of up to 3mm (1/8"). Will also cut through wood, plastic and other materials. Cuts Stainless & Mild Steel Sheet, Tubes, Wood, Plastic & Plaster 5/8" Thread Steel Slotted Barrel to Aid Removal of Debris For 1/2" Chucks - Use with Pilot Drill Extra Cobalt HSS Edge Cuts Stainless & Mild Steel Sheet, Tubes, Wood, Plastic & Plaster 5/8" Thread Steel Slotted Barrel to Aid Removal of Debris For 1/2" Chucks - Use with Pilot Drill Extra Cobalt HSS Edge