Countersink Drill Bit Set, Carpentry Woodworking Boring Tools Reamer with Hex Key for Plastic Wood DIY 3mm 10mm(3mm)

Drill bit is made from carbon steel and countersink is made from good quality 45# steel which ensures a long service life Combined drill bit and countersink bit is great for drilling, chamfering, deburring and countersinking There are 10 sizes of 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm, 7mm, 8mm, 10mm and you can choose the one you need Five flutes design provides small chip loads and quicker removal, it can discharge wood sawdust more rapidly and smoothly Suitable for drilling holes on board of low hardness such as wood, plastic and other soft material