ITEM NAME:100pcs 1.0-3.0mm Straight Shank HSS Twist Drills Woodworking Drill Bits Set #gib Store Home Promotion Hot Item Add to Fav.Straight shank design is more suitable for many electric drills and drill machine (not included). Design: straight shank. 100 x Twist Drills. 20pcs x 1mm twisted position,10pcs silver +10pcs gold. 20pcs x 1.5mm twisted position,10pcs silver +10pcs gold.