Step Drill are the best option for enlarging existing holes. More durable than twist drill bits, with a thick core, which resists breakage. For clean burr free holes, less reaming required. Drills plastic without splitting or cracking. Ideal for the following trades/application; Electrical: drilling of panels and cabinets for cable gland installation, plumbing / hvac: access holes for pipework and installtion, metal workers / fabrication: various sizes and hole enlargement, automotive: holes for cable installation (mobile telephones, antennas, re-directing electrical wiring), maintenance repair operations: various applications, sizes and hole enlargement. Step drills are ideal for drilling into the following materials; ferrous & non-ferrous sheets metals, profiles and pipes, copper, brass and aluminium, stainless steel, plastics, maximum material thickness 4 mm, to ensure best lifetime we recommend the use of a coolant.

Features and Benefits:

• Spot drill - Drill - Debur - All in one go
• Rapid Strike tip for improved centring - less walking and fast drilling without the need to punch or pre drill the material.
• Special tip and step geometry for jam-free performance - less risk of drill snagging when used with high speed cordless tools and also prevents deformation of the drilled material.
• Optimised 2 flute ground sharpened edge geometry for 2 x faster and smoother cutting.
• Produced from custom engineered steel with black oxide coating for 4 x longer life.
• Optimised for use with high speed cordless drills.
• Laser engraved size markings for best long term visibility.
• Each step is relief ground to drill and deburr automatically.
• With 3 flat secure grip to prevent step drill from slipping in the chuck and ensure maximum transmission of torque.

Technical Specification:

Pack Qty ea. - 3
Size - Ø4-12:
No. of steps - 7
Overall length (mm) - 65
Shank diameter (mm) - 6

Size - Ø4-20:
No. of steps - 9
Overall length (mm) - 65
Shank diameter (mm) - 8

Size - Ø6-35:
No. of steps - 14
Overall length (mm) - 90
Shank diameter (mm) - 10