Product Features: ✅Center Drill bit: Center drill is made of high speed steel drill bit & quenching treatment shell designed. High hardness, durable and superior drilling performance. ✅Sawdust Discharged from Hole: Sawdust will be automatically discharged from the top of the holes on both sides, without drill blocked. ✅Unique Design: 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. ✅Multipurpose: perfect for hinges, handles, drawer slides, woodworking and etc. Suitable for professionals and Dyer. ✅The bits are surrounded by spring loaded guides that have a window to show the drill bit depth while making adjustments. ✅Important: Use low speed when drilling (usually keep in 2000R/min - 3000R/min). too fast speed will off center, break the bit or jammed ✅Come with 8 replacement bits: when the drill bit is damaged, just need replace it that can continue to use. ✅135° inclined blade drill bit make drilling easier and faster.
Note: Please adjust according to the hardness of the wood, if the wood is soft, choose a smaller size; If the wood is hard, you can choose a larger size or corresponding opening tool. 5/64inch: Hole diameter is about 2mm, use about 2.2-2.8mm tapping screw. 7/64inch: Hole diameter is about 2.8mm, use about 3-3.5mm tapping screw. 9/64inch: Hole diameter is about 3.5mm, use about 4-4.5mm tapping screw. 11/64inch: Hole diameter is about 4.5mm, use about 5-5.5mm tapping screw. 5mm: Hole diameter is about 5mm, use about 5.5-6mm tapping screw. 13/64inch: Hole diameter is about 5.2mm, use about 6-6.5mm tapping screw. 1/4inch: Hole diameter is about 6.35mm, use about 7-7.5mm tapping screw.
Package Includes: 7 x Center Drill Bits with case 8 x Replacement Drill Bits 1 x Hex Key
⚠️WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. www.p65warnings.ca.gov
