Features Made of high quality 9341 forged steel, and the head is treated by quenching, which ensures high hardness and good wear resistance 135°double back angle design ensures sharp cutting 38° large helix angle design, increasing the chip cutting groove Standard 1/2" round shank for wide applicability Several drilling diameters are available Properties: Made of high quality 9341 wrought steel, and the head is treated by quenching, which ensures high hardness and good wear resistance 135 ° double back angle design ensures sharp cutting 38 ° design with a large spiral angle, increasing the chiphead cutter Standard 1/2-inch roundshaft for wide applicability With stable box for safe organization and storage Several drilling diameters are available Specification: Name: 1/2-inch shaft 9341 steel spiral drill Material: 9341 Steel Handle diameter: 1/2 inch Size: 14mm, 14.5mm, 15mm, 15.5mm(Optional) Weight: about 117 g ~ 129 g Package List: 1 x HSS spiral drill with box Note: Please note that the new and old type of this product will be shipped randomly. Before ordering, make sure you don't mind. Package List