• 1/4" Hex Shank variety of Sizes and Must for Centered Pilot Holes,Self centering clic change door hinge drill bit set includes 9 vix bit and 1 hex key. The vix bit models includes 8 sizes: 5/64', 7/64'', 9/64'',9/64'', 11/64'', 13/64'', 5mm and 1/4". Hinge drill bit set includes 8 different sizes: 6.1/4.8/4.8/4.1/3.4/3.4/2.6/1.8mm. A complete set of customized matching, comprehensive, just in case.
• Center drill is made of high speed steel drill bit & quenching treatment shell designed. Superior drilling performance, high hardness and durability, reducing your working time by more than half,the drilling efficiency increased by 6 times. Not limited to wooden doors and windows, but can also be used for drilling operations on aluminum, copper, stainless steel and other metal door and window hinges. Ideal for drilling holes in hinges, hardware, or any time you need to precisely locate holes.
• Automatic positioning center enhance accuracy and efficiency. Double-sided hole design fast and automatic discharge sawdust from the hole on both sides,Vix bit of the set has a proper beveled on bottom of barrel, which seats well into a counter sunk hinge hol. Others: have flat bottoms.
• Unique design and perfect punch effect. Applicable for the installation of the door hinge. make sure to tighten the centering drill bit before you use them for the first time. When you open the hole, please adjust it appropriately according to the hardness of the wood, if the wood is loose and soft, you can choose the smaller one, if the wood is hard, you can choose the corresponding or larger one.
• 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. Different hardness wood, need different centering drill, you just need take the screw apart and replace the drill.
• Make sure to tighten the centering drill bit before you use them for the first time. When you open the hole, please adjust it appropriately according to the hardness of the wood, if the wood is loose and soft, you can choose the smaller one, if the wood is hard, you can choose the corresponding or larger one.