Multiple quantities of most commonly used sizes. Drill bits supplied in roll up storage case - offering a convenient long term storage solution. TUNGSTEN carbide tipped - for speed, performance and endurance. For rotary and percussion drills. Contents of set: 5x110 mm (x2); 5.5x110 mm (x3); 6x110 mm (x3); 5.5x160 mm (x2); 6x160 mm (x2); 7x160 mm (x1); 8x160 mm (x1)