Mandrex Dryxcut 10 Pieces Kit (MHDS20003)MandreX DryXcut Diamond Drill 10 Piece Kit & Case Mandrex DryXcut sets are created to function under heavy duty conditions. All Diamond DryXcut Hole Saws are produced with an M14 thread, which means these are suitable for use on all angle grinders. Should you use these holes with the One Click arbor, the adapter MX2P0057B will be required. Drilling guide not included, can also be purchased as an extra here: Mandrex Centering Cooling device