18mm, 20mm, 22mm, 24mm woodworking flat drill: high cutting speed, suitable for wood drilling, durable and reliable. 1. The cutting head is made of high-quality high-carbon steel, which has been specially heat-treated to achieve a hardness of HRC55-HRC60. It can be used with our store's two different sizes of connectors to extend the working length of the drill bit. 2. Different from other woodworking flat drills, the product's head has been specially designed with two additional cutting edges on both sides, providing more precise positioning and sharper, faster cutting. For detailed information about this product, please contact our store's QQ number 353224314, and we will provide detailed answers, thank you!
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