Countersink Drill Bit Set, 8pcs HSS 5 Flute Carpentry Countersink Core Drill Bits Chamfer Cutter 3-10mm

The wood drill bit is made of HSS 4241, the center chamfer drill body is NO. 45 steel single flute edge chamfer 90 degrees 7 sizes in one drill bit set (3mm / 4mm / 5mm / 6mm / 7mm / 8mm / 10mm), which perfectly meet your different needs. One set to send a small wrench, countersunk head diameter can be drilled in depth and control The drilling length can be adjusted for different length screws by simply loosening and tightening the fixing screws. Chamfer is 5 flutes which can discharge the wood faster in the process of use, disposable sink hole drilled smooth, perfect screw cap embedded in the surface of the workpiece Use on steel, aluminum and other metals, wood (hardness below 25 degrees) and plastic, ideal for production, maintenance or portable drilling work. Description: Chamfer 1.Single Flute edge 90 degrees 2.Heat treated and quenched high carbon steel. 3.Use on steel, aluminum and other metals, plastic or wood 4. Enlarge or chamfer holes, deburr edges; 15 degree chamfer Features: 1. Material: HSS Drill; Black chamfer drill body: steel 2. Special designed steel groove cutters or counterbore guide hole. 3. Adjustable sleeve depth with a wrench. 4. Drill and countersink for wood screws without changing 5. The drilling length can be adjusted for different length screws simply by loosening and tightening the fixing screw. 6. It is suitable for drills with chuck, for drilling on hardwood or wooden flooring. 7. Heat treated and tempered high carbon steel. 8. Use on steel, aluminum and other metals, plastic or wood 9. Enlarge or chamfer holes, deburr edges; 15 degree chamfer Dimension: 3mm (Dia) x 60mm (L) 4mm (Dia) x 75mm (L) 5mm (Dia) x 85mm (L) 6mm (Dia) x 95mm (L) 7mm (Dia) x 105mm (L) 8mm (Dia) x 115mm (L) 10mm (Dia) x 120mm (L) Package contains: 7 x woodworking chamfer 1 x L-wrench Note: 1. Please allow errors due to manual measurement 2. Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same.