Product Description Features: These drills are ideal for use in thin materials and sheet metals This single bit does the job of multiple drill bits The two-?ute design ensures smooth and accurate drilling with automatic deburring – resulting in burr free drilling without sheet deformation No pilot hole is required Each step corresponds to a hole size The step depth is 5mm Includes: 4-12mm Drill in 1mm increments 4-20mm Drill in 2mm increments 6-30mm Drill in 2mm increment Plastic case Please note that the actual case is now plastic Enquiry Tell A Friend