... HOLE SAW This hole is for cutting various wood, chip board,plasterboard, brick, normal hardness ceramic,tiles, concrete wall with alloy base and ... 73,83mm with hex screwAl Alloy Base to fit hole saw 33,43,53,63,67,73,83mm with hex ... screwAl Alloy Base to fit hole saw 73,83,93,103,113mm with hex screwAl Alloy ... Base to fit hole saw 33,43,53,63,67,73,83,93, ...