Description: 100Pcs Titanium Coated HSS High Speed Steel Drill Bit Set Tool 1/1.5/2/2.5/3mm Features: and . Design: Straight Shank. Material: HSS Titanium Coated. Straight shank design is more suitable for many electric drills and drilling machines(here is not included). Sharp and twisted flute will make the drilling be more easy and effortless. Suitable for wood, aluminum, plastic or materials. Ideal For DIY, Home And General Building/Engineering Using. Diameter and total lenght: 20pcs x 1mm twist bit 20pcs x 1.5mm twist bit 20pcs x 2mm twist bit 20pcs x 2.5mm twist bit 20pcs x 3mm twist bit Total Quantity: 100pcs Note: Please allow 1-3mm error due to manual measurement. please make sure you do not mind before you bid. 50pcs: 10pcs x 1mm twist bit 10pcs x 1.5mm twist bit 10pcs x 2mm twist bit 10pcs x 2.5mm twist bit 10pcs x 3mm twist bit Package: OPP Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.