Portable Grinding&Polishing machine , easy to operate,good quality , different diamon wheels are suitable for it This is portable grinding machine ,easy to operate,good quality ,we also selldiffere diamon wheels are suitable for this machine Diamon wheel 100*22*8mm 240# 150# 80# 100*22*10mm 240# 150# 80# 100*22*12mm 240# 150# 80# BD Wheel 100*22*15mm 100*22*20mm 100*22*25mm