Features Forged from premium 9341 steel, high hardness and good wear resistance. Standard 1/2 inch round shank for convenient and safe use. 38° wide spiral angle design increases the flute of cutting chips. Good reliability, perfectly suitable for cutting wood, metal, etc. The 135° drill tip adopts a raised double angle design to achieve incisive cutting. The drill head is treated by quenching to ensure Specifications: Condition: New Material: 9341 steel. Colour: as shown in the picture. Shank diameter: 1/2 inch. Optional drilling diameter: 16 mm, 17 mm, 20 mm, 21 mm Package weight: about 138g (16mm), 156g (17mm), 189g (20mm), 215g (21mm) Features: The 135° drill tip adopts a raised double angle design to achieve incisive cutting.38° spiral wide angle design increases the groove of cutting chips.Forged from premium 9341 steel, high hardness and good wear resistance.Standard 1/2 inch round shank for convenient and safe use.The drilling head is treated by tempering e to ensure excellent Performance.Good reliability, perfectly suitable for cutting wood, metal, etc. Package list: 1 x twist drill bit. Note: Please note that the new type and old type of this product will be sent at random, and make sure you do not mind before ordering. Package List