Spiral drill bit | Long Length Bits

Dormer A110 HSS Long Series Drill Bit, 5.6mm x 10, for precision and durability in steel drilling applications.

A durable 10.75 mm high‑speed steel spiral drill bit with a long shaft for deep drilling, featuring precision ground edges and a straight shank that ensures smooth feed and minimal vibration during use.

The Dormer A125 Extra Long HSS Spiral Drill Bit offers an 11 mm diameter and a 315 mm length, ideal for deep hole drilling in metal or composite materials. Its high‑speed steel construction ensures durability, while the spiral design promotes efficient chip evacuation and precise cutting. The straight shank allows easy mounting on standard drill rigs, making it suitable for both industrial applications and advanced hobby projects.

A robust 11 mm HSS spiral drill bit, 250 mm long, designed for deep drilling in metal and hard materials. Its high‑speed steel construction offers excellent heat resistance and precise cutting performance.