Brand: Milwaukee Tool Manufacturer's Part Number: 48-89-2531 Part Type: Drill Bits Product Line: Milwaukee RED HELIX Cobalt Drill Bits Summit Racing Part Number: MWT-48-89-2531 UPC: 045242519613 Drill Bit Material: Cobalt alloy Drill Bit Color: Cobalt Quantity: Sold as a set of 19. Drill Bit Quantity: 1 Drill Bit Style: Right-hand twist Additional Information Drill Bit Size 1mm 1.5mm 2mm 2.5mm 3mm 3.5mm 4mm 4.5mm 5mm 5.5mm 6mm 6.5mm 6.8mm 7.5mm 8mm 8.5mm 9mm 9.5mm 10mm 10.5mm 11mm 11.5mm 12mm 12.5mm 13mm Milwaukee RED HELIX Cobalt Drill Bits Milwaukee RED HELIX Cobalt drill bits are engineered for extreme durability and long life in hard metal applications. Designed with a variable helix that includes an aggressive 35-degree helix angle which ends at 15-degrees， the Cobalt bits will provide rapid chip removal， limiting heat buildup to stay sharper longer. The 135-degree split-point tip delivers a precision start and prevents walking for fast， accurate holes. Ideal for tough applications and providing up to 10 times the life of comparable black oxide drill bits， these RED HELIX Cobalt bits can be used in all twist drilling applications. They're available in