HSS Self Centering Hinge Tapper Core Drill Bit Set 4 Pcs 1/4inch Quick Change Hex Shank Bits with Automatic Center Punch for Wood Quick Change Bit, Adjustable Door Window

HSS Self Centering Hinge Tapper Core Drill Bit Set 4 Pcs 1/4inch Quick Change Hex Shank Bits with Automatic Center Punch for Wood Quick Change Bit, Adjustable Door Window

• ★UNIVERSAL SHANK: Standard 1/4” hex shank fits all power tool bit and quick change chucks.High hardness, durable and superior drilling performance.
• ★EXCELLENT DESIGN: Automatic positioning center enhance accuracy and efficiency. double-sided hole design fast and automatic discharge sawdust from the hole on both sides.
• ★UNIQUE FUNCTION: Spring loaded outer guide with chamfer head keeps the high-speed drill centered for perfect pilot holes, making it easy to drill precise holes, a big time saver for you.
• ★CENTER DRILL BIT: Center drill is made of high speed steel drill bit and quenching treatment shell designed. Use low speed when drilling (usually keep in 2000r/min to 3000r/min). Too fast speed will off center, break the bit or jammed.
• ★MULTIPURPOSE: Highly accurate bits are used for drilling exact pilot holes in cabinet door hinges, handles, drawer slides, woodworking etc. suitable for professionals and DIY.