Brand: Milwaukee Tool Manufacturer's Part Number: 48-89-9243 Part Type: Drill Bits Product Line: Milwaukee SHOCKWAVE Impact Duty Step Drill Bits Summit Racing Part Number: MWT-48-89-9243 UPC: 045242505074 Drill Bit Material: High-speed steel Drill Bit Color: Titanium nitride Quantity: Sold individually. Drill Bit Quantity: 1 Drill Bit Style: Step Step Drill Bit Size: 3/16， 1/4， 5/16， 3/8， 7/16， 1/2， 9/16， 5/8， 11/16， 3/4 in. Milwaukee SHOCKWAVE Impact Duty Step Drill Bits Milwaukee SHOCKWAVE impact-duty step drill bits are engineered to deliver the most durable and fastest impact step bit hole drilling solution. These impact duty step drill bits are proudly made in the USA with global materials to give you best-in-class performance in impact drivers with the versatility to be used in drills. The Milwaukee SHOCKWAVE impact duty step drill bits are available in different drill bit models. Each drill bit also has laser-engraved reference marks that are easily visible while drilling.Milwaukee SHOCKWAVE impact-duty step drill bits features:* High-speed， steel impact duty step drill bit* Titanium aluminum nitride (TiAIN) coating helps deliver five times longer life than competitive impact step bits* Step drill bit's RAPID STRIKE tip and dual spiral flute produce two times faster holes * 1/4 in. hex shank has an optimized SHOCKZONE body providing you with the industry's most durable shank， reducing early shank breaks