Clipacore Condensemate puts you in control when upgrading from overflow pipe to 32mm waste pipe (or larger).The 300mm long core bit supplied, simply inserts into the existing open 22mm - 25mm hole (pipe fully removed).Once the outer core bit has scarred the wall, the inner long core bit serving as a guide can be removed by hand.Our easy to use design ensures consistently symmetrical holes eliminating the risk of core bits skidding off course and damaging the wall.The inner spring loaded core bit removes the need for tools thus improving workflow efficiency every time.The 22mm core bit can also be used on its own (with our smaller quick release core adaptor) to prevent blowing the brick face or render wall, compared to using a 22mm SDS masonry drill bit on hammer action.