Features: _x000D_ Adopted of 9341 high-quality steel forging, and head is treated by quenching, which is high hardness and good wear resistance _x000D_ 135 double back Angle design design makes cutting sharp _x000D_ 38big spiral Angle design, increasing the chip cutting groove _x000D_ Standard 1/2 inch round shank for wide applicability _x000D_ With a sturdy box for safe organize and storage _x000D_ Multiple drilling diameter is available _x000D_ _x000D_ _x000D_ Specification: _x000D_ Name: 1/2-inch shank 9341 steel twist drill _x000D_ Material: 9341 steel _x000D_ Handle diameter: 1/2 inch _x000D_ Size: 14mm,14.5mm, 15mm, 15.5mm(Optional) _x000D_ Weight: Approx.117g~129g/4.1oz~4.6oz _x000D_ _x000D_ Package list: _x000D_ 1 x HSS twist Drill Bit with box_x000D_ _x000D_ _x000D_ Note:_x000D_ 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.