Specification: Material: high speed steel Main Color: Gold + Silver Model: 1.5-10mm Color: Gold and Silver Quantity: 99pcs 16pcs x 1.5mm; 16 x 2 mm; 15 x 2.5mm; 10 x 3 mm; 10 x 3.2 mm; 8 x 3.5mm; 8 x 4 mm; 3 x 4.5 mm; 3 x 5 mm; 2 x 5.5mm; 2 x 6 mm; 2 x 6.5mm; 2 x 8 mm; 2pcs x 10mm Diameter: 1.5mm-10mm/0.059- 0.393" Overall drill length: 40-133mm/1.574- 5.236" Handle Type: Round Handle Cooling Type: External Cooling Cutting diameter (mm): 1.5-10 Handle diameter (mm): 1.5-10 Pleated length (mm): 30 Effective length (mm): 30 Overall length (mm): 100 Outer edge vertex angle (°): 135 Maximum depth: 30 Blade size: 1.5mm-10mm Category: Straight Shank Drill Blade: 1.5-10 (mm) Blade length: 1.5-10 (mm) Length: 100 (mm) Handle: 1.5-10 Package Weight: 1325g / 2.92lb Package size: 24* 23.5*4.5cm /9.45 *9.25*1.77in Notice: Due to light and screen differences, the color of the item may be slightly different from the picture. Please allow 1-3cm difference due to manual measurement. packing list: Quantity: 99 pieces 16pcs x 1.5mm drill bits 16pcs x 2mm drill bits 15pcs x 2.5mm drill bits 10pcs x 3mm drill bits 10 pieces x 3.2mm drill bits 8 Piece x 3.5mm drill 8pcs x 4mm drill bits 3pcs x 4.5mm drill bits 3pcs x 5mm drill bits 2 pieces x 5.5m