Rubi SPT 300mm Premium Diamond Blade – For 20mm-35mm Thick Porcelain. Rubi SPT 300mm Premium Diamond Blade – especially designed for cutting 20mm-35mm thick porcelain slabs. For cutting all kinds of ceramic materials, porcelain and natural stone. Perfectly suited to cutting thicknesses over 20mm (up to 35mm). For wet cutting. The cutting disc is segmented, with narrow, closed notches. Premium quality blade – laser welded, with a special alloy that provides a great finish at a very fast cutting speed. Extra-long service life. Suitable for use with electric tile cutters with a plunge effect, which incorporate a protection system conforming to the standard required for segmented discs e. 300mm outer diameter. 25.4mm inner diameter. 2.4mm rim thickness. 5,100 max RPM. 80m/s max perimeter speed.