Holemaker Uni Shank Tinite (Tin) Cutter 55mmx50mm 9000027 AuteMeter # 2245 ISL_C1411 4 AuteMeter # 2245 12 Piece Metric Gear Ratchet Wrench Set (8 19mm) High Speed Steel Annular Cutter AT5550 HOLEMAKER UNI SHANK TINITE (TiN) CUTTER 55MM X 50MM • 50mm DEPTH M2AL HIGH SPEED STEEL MATERIAL M2AL High Speed Steel is a high alloy material with a hardness of up to 67 TITANIUM NITRIDE COATING The Titanium Nitride coating increases tool life by providing the following benefits: • Increased surface hardness to 85HRC • Ceramic surface reducing friction by up to 30% • Especially resistant to cold welding STEP HARDENED PROCESS Cutter is manufactured with extremely hard tooth tips for increased cutter performance while maintaining a softer body which is less susceptible to breakage