Professional tool for commercial or occasional use. TCT blades are fully hardened and tempered as they are tungsten carbide tipped. Suitable for hardwood, softwood, chipboards and other composite materials. Hardened and strengthened to ensure a long life. Versatile blades that can fit a multitude of circular saws with different drives. Varied number of teeth for use on multiple types of jobs. Set also includes 3 x ring adaptors (reduction adaptors) 30 x 25mm, 30 x 20mm and 30mm x 16mm Specifications: 190mm x 30mm bore Maximum speed 6000 RPM 1 x 40 teeth fine cut blade 1 x 24 teeth medium cut blade 1 x 20 teeth coarse cut blade 3 x reduction rings 30mm to 16mm