Description: High speed steel,Durable.with Titanium finish which will help them last longer. Mainly consists of a handle and a work Ministries. Working part serves as a guide portion of the guide portion and preparedness grinding effect, the chip flutes formed helically to facilitate guide crumbs. Pre-drilling holes keeps wood from splitting before putting a screw in it and makes adding hardware go much smoother. Keeps the heads of screws from stripping. They are very useful doing some type of DIY , craft project and General Building/Engineering Using, it can be used to drill holes in a variety of surfaces including metal, wood and plastic. Specification: Model: QST-99pcs drill Category: Straight shank twist drill Material: HSS Shank Diameter: 1.5-10mm Whether standard parts: standard parts Custom processing: No Specifications (diameter * full length): 1.5-10mm / 99pcs Size: 16 Pieces 1.5mm 16 Pieces 2mm 15 Pieces 2.5mm 10 Pieces 3mm 10 Pieces 3.2mm 8 Pieces 3.5mm 8 Pieces 4mm 3 Pieces 4.5mm 3 Pieces 5mm 2 Pieces 5.5mm 2 Pieces 6mm 2 Pieces 6.5mm 2 Pieces 8mm 2 Pieces 10mm Package Includes: 99 Pieces Drill Bits Set
