ITEM NAME:Drill Bit Sharpening Tool Portable Diamond Drill Corundum Grinding Wheel Power Descriptio n ★Description: Great Quick And Easy Way To Sharpen Drill Bits ★Use Your Drill To Rotate The 100 Grit Grindstone And Simply Press The Bit Against It For A Sharp Edge. You Will Have To Do This Twice For Each Drill Bit For Both Edges. Designed For Multiple Drill Bit Size Perfect Gift For Any Handyman ★Specifications: Accommodates drill sizes: 5/64" - 13/64"(2mm-5mm) 7/32" - 21/64"(5mm-8mm) + 11/32" -1/2"(8mm-12.5mm) Angle Stop Degrees: 60 degrees Left Safe and Easy to Use with the Appropriate Built-In Guides 100 Grit Grinding Stone Requires a Power Drill That Operates Between 2000 and 3500 RPM, (sold separately) ★Package Included: 1 x Diamond Drill Bit Sharpening Tool Honesty is gold for all! Drill Bit Sharpening Tool Portable Diamond Drill Corundum Grinding Wheel Power