1.Original manufacturer 2.High grinding efficiency with better smoothness 3.Competitive price 4.ISO9001 & OEM acceptable Diamond hand pads are designed to polish and finish surface that electric tools can't process.Specification: 90x55mm Electroplate Type: #60, #120, #200, #400 Resin Type: #800, #1800, #3500 Any question, pls feel free to contact me.Henry Chan (sale08 at freet-tools dot com)