Diameter: 20 mm, Total Length: 230 mm 3-blade design for faster drilling and chip removal. With the help of the centering tip, precise placement in the center of the drill hole is possible to quickly cut a hole in wood. The E9.5 mm hex shank fits for quick change and prevents the bit from slipping. The wood drill bits allow for precise and crack-free drilling in any material. The long wood drill bits are ideal for hardwood, softwood, and sheet materials. Auger drill bit for professional processing of softwood, hardwood, MDF, wood, plywood, plastic, and other woods.