Durable Carbon Steel Countersink Drill Bit Woodworking Chamfer with Hex Key(3 6mm)

to use:The drill bit is made from carbon steel and countersink is made from good quality 45# steel which ensures a long service life. Great drilling performance:The combined drill bit and countersink bit is great for drilling, chamfering, deburring and countersinking. Multiple choice:There are 10 sizes of 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm for you to chose. Flutes design:The five flutes design provides small chip loads and quicker removal, it can discharge wood sawdust more rapidly and smoothly. Widely used:It is suitable for drilling holes on board of low hardness such as wood, plastic and other soft material.