Multi-material holesaws ideal for electricians, carpenters, kitchen fitters and all related heating, ventilation and plumbing trades. Designed for use in a wide variety of materials such as bricks* (both solid and with cavities); aerated concrete blocks*, lightweight aggregate blocks and breeze blocks; soft density lime-sandstone building blocks up to hardness of 30 N/mm²; softwoods, chipboard, plywood and medium density fibreboard (MDF); plastics and plastic-coated board (Contiboard). *Not suitable for use in hard materials such as concrete, granite, medium to hard density lime-sandstone block, natural stone and hard brick over 30N/mm² hardness. Cuts Multi-Material Steel Slotted Barrel to Aid Removal of Debris 35mm - 76mm Dia. Holesaws Fits Any Chuck 10mm or Larger Cuts Multi-Material Steel Slotted Barrel to Aid Removal of Debris 35mm - 76mm Dia. Holesaws Fits Any Chuck 10mm or Larger