Applicable Size：1/8" (3mm)Up To 3/4″ (19mm) Fasteners. Quick Change 1/4" Hex Shank Bit.

Process Material:Surface Sandblasting Treatment With Rust Prevention Function.Made of High-Speed Steel Material, Durable & efficient.

Operation Method:

1.Put The Bit Over The Screws/Bolts First, Start With The Lowest Speed.

2.Slow Apply Pressure To Remove The Burr & Increase The Speed As Needed.

3.Do not Open The Screwdriver Until The Drill Bit Completely Covers The Screw/Bolt.

4.Drill Use State:Operate with 0-400Rpms.

Using Features：

1.Can Be Used To Quickly Repair Damaged/Flatted Bolts Of Virtually ,Tightens The Bolts and Nuts In Pplace.

2.Can Be Used To Quickly Shaves Down The Outer Edges Of a Screw/Bolt/Pipe/Rod and Remove The Burr.

Application Scope: Effective For Hardened Steel, Mild Steel, Copper, Brass, Wood, Fiberglass , Hard Plastic.