The Hertel Combo Drill & Countersink #1/0 combines drilling and countersinking functions in one efficient tool. Featuring a 1/8" body diameter and precision-engineered 118° point angle, this versatile bit delivers clean, accurate holes with perfectly matched countersinks. Crafted from premium cobalt material with a bright polished finish, it offers superior durability and heat resistance for demanding applications. The 3/64" point length provides excellent stability during operation, while the compact 1-1/4" overall length allows access in tight spaces. This professional-grade combo drill is ideal for woodworking, metalworking, and precision fabrication projects where flush-mounted fasteners are required. Part #81105500D10 ensures you're getting the exact specification needed for your application.