With the Bahco 3833-121-C Superior multi-construction hole saw, you cut clean and precise 121 mm penetrations through varied building materials with complete control. The tough carbide-tipped teeth cut smoothly through timber, wood with nails, plasterboard, MDF, plastics, and brick without the need to swap tools. Deep gullets rapidly clear chips and dust to prevent clogging and keep cutting speed high. Featuring an extended cutting depth of 71 mm, this hole saw easily tackles thick boards and walls when installing ventilation ducts, pipework, and large fittings.