21 pcs Center Drill Bit Set, AFUNTA Self Centering Hinge Tapper Core Hole Puncher 5/64'' 7/64'' 9/64'' 11/64'' 13/64'' 5mm 1/4'' & 1 Pcs Hex Key & 10 Pcs Replacement Drill Bits

Key features

• Precise Positioning: No displacement, sawdust will be automatically discharged from top of hole on both sides, drill bit will not be blocked.
• 7 Different Size: Come with most common hinge screw sizes 5/64", 7/64", 9/64", 11/64", 13/64", 5mm, 1/4".
• Automatical Discharge: Sawdust will be automatically discharged from the top of the holes on both sides, without drill blocked. Never miss the center of the hole again, references from the hinge bevels.
• Easy to Replace: Different hardness wood, need different centering drill, you just need take the screw apart and replace the drill.
• Easy to Install: Unique design and perfect punch effect. Applicable for the installation of the door hinge. Easy to use and install, change bits fast which one-handed load and release.