Center Drill Bit Set 5 PCS YaoJoe Self Centering Hinge Tapper Core Drill Bit Set for Woodworking Adjustable Door Window Drill Bits with 1 Hex Key 5 64 11 64

Doors Self Centering Hinge Tapper Core Drill Bit Set--7 pcs Center Drill Bit Feature A. Suitable for most general purpose electric drills B.Efficient and accurate positioning C.New upgrade 135° inclined blade drill bit D.Double-sided hole discharge sawdust design How to use? 1.Prepare the center drill bit and hex key. 2.Rotating the hex key. 3.Grab the top of the bit and unscrew the shell (just like twist the lid off the drink) . 4.If you need replace the drill bit, just need remove the broken bit and install the replacement bit. Warm Tips - Use low speed when drilling (usually keep in 2000r/min - 3000r/min). Too fast speed will off center, break the bit or jammed. - When drilling the hole, please adjust according to the hardness of the wood. If the wood is soft, you can choose the smaller center drill bit. If the wood is hard, you can choose the corresponding or bigger one. - If you can't get the center drill bit out after drilling, use the hex key to separate the drill bit. Specifications: Material: Brass + high-speed steel Type: Core Drill Bit Color: Silver Quantity: 4 pieces Size: 5/64", 7/64", 9/64", 9/64", 11/64" 1 X Hex Key