The Countersink Bit Set is designed specifically for creating clean, precise countersinks in wood. Available in two configurations, the 3-piece set includes sizes 12 mm, 16 mm, and 19 mm, while the 5-piece set offers a wider range with sizes 8 mm, 10 mm, 12 mm, 16 mm, and 19 mm. Made from high-speed steel (HSS), these bits deliver durability and sharpness for smooth cutting and professional-grade finishes. Perfect for preparing screw or bolt head recesses.