Longest Lasting, Fastest Cutting Resin.STI Terrazzo+ pads are the updated version of the previous STI Terrazzo Pad with 70% more diamonds and abrasives than the old style Ñ 37 grams extra to be exact. Terrazzo+ Pads are designed using high-pressure molding to compress more diamond powder and abrasives into the pad. And, more coverage means a lower cost per SF/m2! It is the longest lasting and the fastest cutting resin pad on the market. STI Terrazzo Pads are best for wet polishing on epoxy- and portland-based terrazzo and stone - use as a closing step & first step of restoration. Also, can be used as a first cut tool on new, unsealed concrete. STI Terrazzo Pads have a specialized matrix for aggressive cut with a fine scratch pattern. Comes in 3-inch diameter with 8mm thickness. Available five grits: 35, 50, 100, 200, and 400.