3 piece conical drill bit set HHS STEEL - TITANIUM COATED - the drill bits are durable, they are made of high-speed HHS steel, which is strong and durable, thanks to which they are perfect for drilling holes, e.g. made of PVC, thin-walled sheets and even metal. The product does not require prior drilling READABLE NUMBERING - the cutters are stepped, each of them has a numbering. It is perfectly readable, thanks to which we can easily drill a hole of the desired width. The set includes three drill bits for making holes of different sizes. ONE BIT FOR MANY HOLES – conical drill bits are composed of interconnected metal discs of increasing diameter. Thanks to the many different stages of the drill, it is possible to drill holes of different diameters with just one bit. CONVENIENT BAG - the set is stored in a practical case, which greatly facilitates the storage of drill bits, and is also useful when transporting them. Tips stored in the case do not collide or get damaged. Characteristics EAN code: 5902802909640 Supplier code: 0000666 Material: bearing steel, titanium coated; used for: Plastic, wood, iron, aluminium, nylon pin: 6 mm Tip dimensions 4 - 12mm: 4; 6; 8; 10;12 3 - 12mm - 3; 4; 5; 6; 7; 8; 9; 10; 11; 12 4 - 20mm - 4; 6; 8; 10; 12; 14; 16; 18; 20;