Made of high-quality HSS with high carbon content, durable and rust-free, long service life. By high-frequency quenching heat treatment, high hardness. The countersink is suitable for wood, plastic, other materials with low hardness to form holes. Suitable for cordless drilling machines and hand-held screwdrivers with hexagonal mountings, such as drilling machines from Hilti, Bosch, Makita, Hitachi, Fein, AEG, Metabo, DeWalt, Black & Decker, Brüder Mannesmann. The scope of delivery includes 6mm, 8mm, 9mm, 13mm, 16mm, 19mm large countersink drill, different sizes offer you a wide choice. The sinker of 6mm, 8mm, 9mm, 13mm, 16mm, 19mm size is ideal for making wooden planks, fiberboard, chipboard, plywood, plastic, aluminum board, etc. Universally applicable, lowering and deburring without chatter marks. Suitable for DIY, home and general building to development. Product Information Material: HSS Size: 6mm, 8mm, 9mm, 13mm, 16mm, 19mm Recording diameter: 6,35mm package 1 x 6mm countersink 1 x 8mm countersink 1 x 9mm countersink 1 x 13mm countersink 1 x 16mm countersink 1 x 19mm countersink