Bosch PRO HSS Step Drill Bit 9 Steps 4-20mm Hex Shank 1/4" (2608597524) Equipment Jack Length x Width TPI

Length x Width TPI

this adapter and extension supports 1-1/4" female extension connection for compatible 1-1/4" male core bit systems

the blade options provide practical solutions for different cutting needs

Variable no-load speed from 800–3000 RPM for controlled cutting

Bosch PRO HSS Step Drill Bit 9 Steps 4-20mm Hex Shank 1/4" (2608597524) Equipment Jack Length x Width TPIBosch PRO HSS Step Drill Bit 9 Steps 4 20mm Hex Shank 1 4" (2608597524) The Bosch PRO HSS Step Drill Bit is a professional drilling accessory designed for creating and enlarging holes in compatible materials. It is suitable for workshop, fabrication, repair, installation, and maintenance applications using compatible drills. This step drill bit features 9 steps with a drilling range of 4mm to 20mm and a 1 4" hex shank for secure fitting with