ITEM NAME:10Pcs/Set 3mm HSS Double Ended Spiral Torsion Drill Tools Drills B9T8 10Pcs/Set 3mm HSS Double Ended Spiral Torsion Drill Tools Drills B9T8 Features: Design: Double ended straight shank,Hardness and sharp, perfect for drilling the extra thick wood. Perfect for DIY, home and general building, engineering using, etc.One can be used as two. Very convenient and durable Uses: cast iron, thin steel plate, thin stainless steel has been thin non-standard iron and other metal openings 100% brand new and high quality Utilization: Metal Drilling Type: Torsion Drill Color: Silver Material: High Speed Steel ?Size: 3mm Length: 45mm Package included: 1 set of 10 double-head spiral twist drill Note: Do not use for metal items such as rebar Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.