The 4" Venom SVE Economy Line Diamond Polishing Pads are made of high quality diamond and resin. Fast grinding force, good flexibility, wear-resistance, high polishing efficiency and long service life. These are sold as a set of 8; Designed for efficiency, each diamond pad in the kit is engineered to provide fast grinding force without compromising on wear-resistance or flexibility. Experience a streamlined polishing process that not only saves you time but also delivers exceptional results, allowing you to move seamlessly through the grits and reveal the true beauty of your granite surfaces.