Which is made of abrasive cloth conglutinated with resin,which is ranged radiantly like fan on a soft core .It can be installed to portable or special grinders,It is characterized by high fficiency,anti-clog,quick elimination of heat not ham to work piece,low cost. Work surfaces:metal tubes ,weld ,stone,wood and plastics. can be customized according to customer's requirement Warning:ear, eye, face and body protection