Bosch 2608587428 6/9/12.5/15.2/18.6/20.4/22.5/26/28.3/30.5/34/37 mm HSS Step Drill Bit

Bosch 2608588067 4/6/8/10/12/14/16/18/20/22/24/26/28/30 mm HSS AlTiN Step Drill Bit

Bosch 2608587430 4/6/8/10/12/14/16/18/20/22/24/26/28/30 mm HSS TiN Step Drill Bit

Bosch 2608587426 4/12/4/20/6/30 mm 9 Step HSS Drill Bit Set

Bosch 2608588065 4/5/6/7/8/9/10/11/12 mm HSS AlTiN Step Drill Bit