grinding,deburring,polishing, finishing,cleaning in internal work like hole,groove etc.Diam*width*shankTypeGritMaxrpm3/4"*3/16"*1/8"Klingspor A/O and Chinese A/O40# 60# 80# 120# 180# 240# 320# 400#38,2003/4"*3/8"*1/8"Klingspor A/O and Chinese A/O40# 60# 80# 120# 180# 240# 320# 400#38,2003/4"*5/8"*1/8"Klingspor A/O and Chinese A/O40# 60# 80# 120# 180# 240# 320# 400#38,2003/4"*3/4"*1/8"Klingspor A/O and Chinese A/O40# 60# 80# 120# 180# 240# 320# 400#38,2001-3/16"*3/16"*1/8"Klingspor A/O and Chinese A/O40# 60# 80# 120# 180# 240# 320# 400#31,8001-3/16"*3/8"*1/8"Klingspor A/O and Chinese A/O40# 60# 80# 120# 180# 240# 320# 400#31,800