General description This DeWalt DT7943 Extreme Flat Wood Spade Bit Set includes 8 pieces ranging from 12mm to 32mm, making it suitable for various applications on natural hard and soft wood, chipboard, and other man-made materials. It is ideal for tasks such as door locks, mortising, and electrical and plumbing work. Technical specifications Includes flat bits: 12mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, and 32mm Extra thick robust steel shank for enhanced durability Chamfered outer cutting spurs for clean and fast drilling Precision ground central point for optimized material penetration