Sufficient and type are enough to meet your needs, and you are to share with your who need these accessories Step drill bit set: various sizes, 4-12 mm, 3-12 mm, 4-20 mm, they are made of high speed steel, coated by titanium, these step drills are resistant to heat, corrosion and rust, practical and durable Countersink drill bits set: made of quality carbon steel, the surface of the countersunk drill bits is plated with titanium to prevent rust; It is durable to use and can you for a long time; They are suitable for quick replacement and suitable for most power tools with the 1/4 inches hex , the is hardened and to , all drill bits have a angle at this point, allowing peaked and precise counter sinking Automatic center punch: automatic center punch is so effective that you are to workpiece with a dimple to prevent screws and drills from wandering, helping you complete work accurately and quickly, save your time and energy Wide application: suitable for drilling, reaming, chamfering, screw heads, etc.; Suitable for chamfering types of materials such as wood, plywood, aluminum, iron, copper, fiberboard, particle board, plastic, PVC board, etc. Type:Hex Cutting Angle String:90 Degrees Colour:Golden Material:High speed steel Package Contents: 3 * Step drill bits 6 * 5 Flute counter sink drill bits 1 * Automatic center punch Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real . The measurement allowed is +/- 1-3cm.