ITEM NAME:10-25mm Spade Paddle Flat Drill Bit Set Wood Boring Woodworking 1/4" Hex Shank Product Description: Model: A grade woodworking flat drill woodworking drill Material: high carbon steel Features: 1. The cutter head is made of high quality high carbon steel and has a hardness of HRC55-HRC60 after heat treatment. 2. Unlike other woodworking drills, the product head is specially designed with two cutting edges on both edges for precise positioning and labor saving. 3. The product is easy to use and can be used on bench drill, DC and AC hand drills . Package Include: According to your Choose!.Model: A grade woodworking flat drill woodworking drill. Unlike other woodworking drills, the product head is specially designed with two cutting edges on both edges for precise positioning and labor saving.