【HIGH-QUALITY MATERIAL】Quickly and cleanly drills smooth, straight holes in hardwood or cork. 【7 SIZES】There are 6 different diameter auger drill bits, including 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, and 18mm, with a total length of 230mm/9.05", to meet your various needs. 【SDS SHAFT DESIGN】The unique design ensures that the shank will not slip during operation, and the SDS shank can be used with hand drills and drill presses. 【SELF-DIRECTING HEAD】The self-directing threading head at the front of the drill bit allows it to be positioned accurately and quickly in the wood for easy drilling. Wide, wide-bladed center twist drill bit. The solid center design makes the drill bit stable and robust during the drilling process. The wide blade allows for faster drilling, facilitates chipping, and smooths the hole walls. 【DIY ACCESSORY】 High-quality carbon steel auger bits are rust-resistant and durable. Product Description: Durable hard metal material. Tungsten steel for longer life. Guided by the