Dormer Pramet A225 5/16 Inch x 3/4 Inch HSS BS 60 DEG CENTRE DRILL BS 328 Indexable Drills and its straight shank fits

and its straight shank fits common chucks and collets for easy setup

Durable laydown triangular geometry: Its geometric design provides rigidity and load distribution for stable cutting

making it suitable for deep or confined internal threads across a range of materials

chamfer edges

This design also supports efficient finishing in through-holes and near the bottom of blind holes

Dormer Pramet A225 5/16 Inch x 3/4 Inch HSS BS 60 DEG CENTRE DRILL BS 328 Indexable Drills and its straight shank fitsThe Dormer Pramet A225 center drill, 5 16 in diameter x 3 4 in length, is a precision HSS tool engineered to create accurate center holes in shafts for secure holding and precise alignment. It's a versatile choice for engineers, machinists, buyers, and hobbyists, usable on both CNC and conventional machines. With a 120 pilot and a 60 conical tip, it starts holes cleanly and centers parts quickly, helping you achieve concentric, true running setups