(ZOBO3-11) Code Depth stopTo limit the cutting depth with STL type system 3 drill bits from diameter 101mm. ZOBO631402 Drill guideTo adjust the cutting depth with STL type system 3 drill bits from diameter 101mm. ZOBO631369 Related products Chrome steel drilling system 3 Ø 15 - 30 mm Carbide drilling system 3 Ø 15-30 mm Chrome steel drilling system 3 Ø 31-50 mm Carbide drilling system 3 Ø 31-50 mm Chrome steel drilling system 3 Ø 50 - 100 mm Carbide drilling system 3 Ø 50-100 mm Chrome steel drilling system 3 Ø 101 - 130 mm