This Keyless Chuck Compatible For Any 1/4” Cordless Power Screwdriver Into A Drill Or Grinder. The Clamping Range Of This Chuck Is 0.3mm To 6.5mm. The Triangular Claw Solves The Problem Of Unstable Centering And Has A Good Self-Centering Function. The Aluminum Alloy Shell Is More Rigid And Will Not Crack During Use. Make Sure That The Chucks Are Tightened Before Use To Ensure That They Are Correctly Centered In The Chuck To Avoid Shaking. The Internal High-Quality Spring Plays A Role Of Fastening, 1/4-Inch Hex Shank Snaps Easily Into The Power Screwdriver. It Is A Must In Your Toolbox. If You Are A Percussion Drill User, By Using This 1/4“ Chunck, You Do Not Need An Additional Electric Drill. It Can Turn Your Percussion Drill Into An Ordinary Drill In A Few Seconds. Because The Free Rotation Speed During Impact Is Usually 1000 Rpm Faster Than Most Drill Bits. This Means More Holes Are Drilled And Less Actual Force Is Required. If You Are Drilling Holes In Metal, Use A Little Oil Or Other Type Of Lubricant/Coolant!

• It Is A Must In Your Toolbox. If You Are A Percussion Drill User, By Using This 1/4“ Chunck, You Do Not Need An Additional Electric Drill. It Can Turn Your Percussion Drill Into An Ordinary Drill In A Few Seconds.
• Because The Free Rotation Speed During Impact Is Usually 1000 Rpm Faster Than Most Drill Bits. This Means More Holes Are Drilled And Less Actual Force Is Required. If You Are Drilling Holes In Metal, Use A Little Oil Or Other Type Of Lubricant/Coolant!

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