Box of 13 twist drills - Suitable for drilling holes with wood, plastics, metals (thin aluminum plate or thin iron). Not suitable for walls, stainless steel, etc. Drill bit 13 pack diameter - 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.2mm 3.5mm, 4, 0mm, 4.5mm, 4.8mm, 5.0mm, 5.5mm, 6.0mm, 6.5mm. 6.35mm Hex Handle - Replace Drill Bit Quickly and Safely. Compatible with bench-top drill, ordinary manual electric drill, or other standard drill chucks. Fluid drilling: Designed as 45 ° outside edge angle angle, which can improve processing performance when drilling the workpiece material. Threaded chip splines can clear chips and debris faster. HARDWARE: Spiral drills are high speed steel with titanium coating, provide heat resistance and long life. Specification: Diameter Size: 1.5mm, 2.0mm, 2.5mm, 3.0mm, 3.2mm 3.5mm, 4.0mm, 4.5mm, 4.8mm, 5.0mm, 5 , 5mm, 6.0mm, 6.5mm Hex Shank Diameter: 6.35 mm Material: HSS with titanium coating Tip angle: 135 ° Type of flute: Spiral Total weight: 174 g The package includes: 1 x metal drill bit-Ø 1.5 mm, working length: 16 mm, total length: 62 mm, weight: 9g. 1 x metal drill bit-Ø 2.0 mm, working length: 23 mm, total length: 68 mm, weight: 9g. 1 x metal drill bit-Ø 2.5 mm, useful length: 30 mm, total length: 73 mm, weight: 9g. 1 x Ø 3.0 mm metal drill bit, working length: 37 mm, total length: 78 mm, weight: 10g. 1 x metal drill bit-Ø 3.2 mm, useful length: 41 mm, total length: 82 mm, weight: 10g. 1 x meta-Ø 3.5 mm drill bit, useful length: 48 mm, total length: 90 mm, weight: 11g. 1 x metal drill bit-Ø 4.0 mm, working length: 43 mm, total length: 93 mm, weight: 12g. 1 x metal drill bit-Ø 4.5 mm, useful length: 51 mm, total length: 97 mm, weight: 12g. 1 x metal drill bit-Ø 4.8 mm, useful length: 55 mm, total length: 102 mm, weight: 13g. 1 x metal drill bit-Ø 5.0 mm, working length: 56 mm, total length: 104 mm, weight: 14g. 1 x metal drill bit-Ø 5.5 mm, useful length: 66 mm, total length: 112 mm, weight: 16g. 1 x metal drill bit-Ø 6.0 mm, working length: 61 mm, total length: 112 mm, weight: 18g. 1 x metal drill bit-Ø 6.5 mm, working length: 69 mm, total length: 120 mm, weight: 20g Note: This does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the difference between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!