Countersink Drill Bit 4PCS 3-6mm 3 Flute Drill Set HSS Chamfer Carpentry Reamer for Wood Metal Aluminium Plastic (Titanium Coated)

【High Quality Material】 High carbon steel material, quenching, high hardness, and good abrasion resistance, durable 【Sizes】4 Pieces 4 Sizes 3mm, 4mm, 5mm, 6mm drill bit 【Easy to use】Drilling length can be adjusted for different situations simply by loosening and tightening the setscrew 【Round Handle Design】Suitable for the market bench drill, the use of more convenient 【Widely Application】Can use on steel, aluminum & other thin metals, Especially, plastic or wood etc