... and tapping 2- Gear driven system, 12 speed steps Vertical drilling machine: Z50501- New-designed, compact construction2- CE, CSA, UL approved ... choice for single piee, small batch and mass production for drilling,counter boring,reaming, tapping,spot facing,etc. ModelZ5050 Max ... . Drilling capacity(mm)50 Max.Tapping capacity(mm)M30 Diameter of ...