Features ✔️【High Strength Material】This HSS twist drill is forged from high quality 9341 steel and has a hardened head for high hardness, good wear resistance, corrosion resistance and long life. ✔️【Raffined Design】This twist drill has a 135° double back angle design for sharper cutting; there is also a 38° large helix angle design for increased chip removal. ✔️【Wide Application Range】This steel drill bit can be widely used in various industries for maintenance and drilling work, practical and high frequency of use, perfect for maintenance work. ✔️【Various Options】A wide range of drill diameters are available for purchase, including 14mm, 14.5mm, 15mm, 15.5mm, which are sufficient to meet your various needs. ✔️【Quality Assurance】Before shipment, this batch of high speed reduced shank steel twist drills undergoes rigorous testing and passes the standard test, safe and reliable in use, you can be confident to use. Specification: Name: 1/2-inch shank 9341 steel twist drill Material: 9341 steel Handle diameter: 1/2 inch Size: 14mm,14.5mm, 15mm, 15.5mm (Optional) Weight: Approx.117g~129g/4.1oz~4.6oz   Package list: 1 x HSS twist Drill Bit with box Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List