Hasco Base Cut Heavy is the highest viscosity version of the Base Cut Series. Like 005 and Medium, Base Cut Heavy can be used as a multi-purpose metalworking fluid designed for light to medium duty screw machine operations. Base Cut Heavy can be used straight on operations machining non-ferrous and low carbon steel. It can be used as a platform for more severe operations by adding Hasco Boost 125 or Boost 0136. Base Cut Heavy can also be used as a lubricating oil in certain screw machines.