diamond resin abrasive-170mm is very popular in USA, Germany, Swizerland,etc. DIAMOND RESIN ABRASIVE-170MMProduction capacitive: 10800 pcs per month.Advantage: Long lifespan, good performance.Grit:#120~#3000Main market: Brazil, China, USA, Canada, Germany, Swizerland,etc.We are looking forward to cooperating with you.