ITEM NAME:Drill Bit Sharpening Tool Portable Diamond Drill Corundum Grinding Wheel P GPK 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 We offer you what you need! Drill Bit Sharpening Tool Portable Diamond Drill Corundum Grinding Wheel Power.1 x Diamond Drill Bit Sharpening Tool. 100 Grit Grinding Stone. Your Drill To Rotate The 100 Grit Grindstone And Simply Press The Bit. Drill Bit For Both Edges. Designed For Multiple Drill Bit Size. Great Quick And Easy Way To Sharpen Drill Bits.