Dormer A110 Series HSS Twist Drill Bit, 3.3mm Diameter, 106 mm Overall

If you're boring holes in hard-to-reach areas, you can count on this drill bit from Dormer. Its extra-long length of 106mm is handy for making deep holes or reaching spots that are tricky to access. The conventional 118° point ensures strength and is easy to regrind when needed, so you can keep using this bit for years to come. For convenient use, it can bore to a depth of up to six times its 3.3mm diameter before its right-turning mechanism has any trouble evacuating waste material.

• Compatible with handheld or machine drilling tasks for versatility
• Steam tempering minimises the risk of corrosion

• Aerospace engineering
• Metalworking
• Building maintenance

This adaptable bit is a practical pick for many different materials, from tough steel and cast iron to softer plastics and aluminium.

BS 328; DIN 340 RN; ISO 494

HSS Long & Extra Long Series

These HSS straight shank, right hand cutting long series twist drills are capable of drilling up to 10x the drill diameter before the flute needs to be cleared, to avoid fouling. They are made to BS328/DIN340 RN and ISO standards, and are recommended for use with steel and cast iron.