Interior finishing, electrical and installation work, installation of kitchen worktops / tables, metalworking and woodworking. Diameter 16 – 152 mm, progressive HSS bi-metal variable tooth pitch, 8% cobalt alloyed, hex or SDS Plus shanks, no burning of the workpiece edges, problem-free chip removal, long working life. For RSJs, (rustproof) stainless steel, castings, aluminium, bronze, copper, brass, plastic, acrylic, plasterboard, wood, GRP, wood fibre insulation boards, vinyl, (HPL) laminated boards