8pcs wood countersink bits with 4pcs standard countersinks and 4pcs four-tooth chamfering bits, can be used with bench drill, hand drill or other professional drilling machine. To avoid slippage or eccentricity during drilling, we recommend using a bench drill or fixing the drill. 7pcs wood countersink drill bit set made of high quality carbon steel with titanium coating, the drilling length can be adjusted for different screw lengths. The chamfer is composed of 5 flutes which can discharge the wood faster when using. 6pcs 1/4" 5 flute 90 degree hex drill bits made of standard high speed steel. With high frequency quenching for heat treatment, the HSS countersink drill bits have high toughness and hardness. Coated with titanium, the chamfer kit is rust-proof and has a long service life. 3pcs step cone drill bit set forged from titanium coated high speed steel, the hexagonal shank of the step drill bits adopts groove design, helps the electric drill clamp more firmly, suitable for drilling thinner stainless steel, carbon steel, aluminum plate, iron plate and other materials. We provide different wood drill bits. You can use it in any holes you need. Note: For your safety, please do not use it too fast when using it. Please check if it is suitable for your machine before use. Welcome to meet