SUTTON TOOLS® H115-Series Diamond Grit Holesaws have a 25mm Cutting depth and are designed for cutting tiles, glass, laminates, fibreglass, hard plastics, plexiglass, fibre cement, ceramics, graphite, carbon, marble and soft stone. We recommend using the SUTTON TOOLS® Diamond Holesaw Guide (not included) to prevent slipping on vertical or horizontal surfaces. Features Diamond Coated Teeth - For long life in the hardest tiles and abrasive materials, Cut Out Slots - To dissipate heat and improve speed (and life), International Standard Thread Pattern - Accepts all standard thread arbors, Includes 5 x H115-Series Diamond Holesaws, 19 mm, 25 mm, 32 mm, 38 mm, 51 mm, 2 x Arbors, DA1 - 19-29 mm Arbor, DA2 - 32-105 mm Arbor, 2 x Pilot Drills, PD1, PD2, Plastic Carry Case,