Dormer Pramet A170 18.50 mm HSS ST STRAIGHT SHANK JOBBER DRILL, 1/2IN SHANK ISO Insert - DC Style M55 x 3 (Right‑Hand): Quickly

M55 x 3 (Right‑Hand): Quickly verify that threaded holes meet the 6H standard

and the ability to handle tough metals in a single

repeatable clamping in collets or chucks

Left-hand spiral flute with right-hand cutting: Provides controlled chip formation and efficient material removal

extending tool life in harder materials and high‑temperature reaming tasks

Dormer Pramet A170 18.50 mm HSS ST STRAIGHT SHANK JOBBER DRILL, 1/2IN SHANK ISO Insert - DC Style M55 x 3 (Right‑Hand): QuicklyThe Dormer Pramet A170 18. 50 mm HSS Straight Shank Jobber Drill with a 1 2" shank is a versatile cutting tool designed for hand held and machine drilling. It features an 118 degree conventional point that delivers a strong bite and is easy to re sharpen, helping you get clean starts and consistent hole geometry. The steam oxide finish reduces friction and prevents workpiece material from sticking to the cutting edge, contributing to smoother drilling