Woodworking Countersink Drill Bit Set, Carpentry Reamer Boring Tool Round Shank with Hex Key(4mm)

QUICKLY REMOVAL: The five flutes design of the countersink drill bit provides small chip loads and quicker removal, it can discharge wood sawdust more rapidly and smoothly MULTI SIZE: 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 The drill bit is made from carbon steel and countersink is made from good quality 45# steel, which ensures a long service life PRACTICAL: The countersink drill bit set is suitable for drilling holes on board of low hardness such as wood, plastic and other soft material APPLICATION: Combined drill bit and countersink bit is compact design, easy to carry and store, great for drilling, chamfering, deburring and countersinking