This kind of flap disc can be used to blending, deburring, cleaning and finisihing in awkward area which is hard to touch such as curved surface.
Size Arbor Grit Maxrpm Type
4"*5/8" 36# 40# 60# 80# 120# 15300 T27/T28
4-1/2"* 7/8" 36# 40# 60# 80# 120# 13300 T27/T28
5" *7/8" 36# 40# 60# 80# 120# 12000 T27/T28
7"* 7/8" 36# 40# 60# 80# 120# 8600 T27/T28