These are the best professional high speed steel taper point drills with 1/4" hex power shanks available. And now with new TPS-Lock system, you have the positive drive provided by a one piece tool and cost savings provided by a drill with a detachable shank, plus a lifetime guarantee against breakage. TPS-Lock system will not release the drill until you are ready to take it apart.
How to Engage The TPS-Lock Grip :
Align the flat provided on the shank of the new replacement drill with the set screw hole. Use a small hammer to tap the shank onto the replacement drill. Replace and tighten the set screw.
How to Release The TPS-Lock Grip :
Loosen and remove the single hex socket set screw. Tap on the shank to drive it off the drill.
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