Feature●This package carries (a)-(b):●(a) 10 Piece of 5" / 5 Inch / 125mm Inch Inch Convex Turbo High Grade Blade.●They do very good job for circle shape cutting for granite and concrete. The inner hole diameter is 7/8"-5/8", since washer/bushing/spacer included.●(b) 6 Pieces of 5" / 5 Inch / 125mm Diamond Double Row Segment cup wheel for concrete stone travertine surface smoothing. The inner hole diameter is 7/8"-5/8", since washer/bushing/spacer included.Description (a) 10 Piece of 5" / 5 Inch / 125mm Inch Inch Convex Turbo High Grade Blade. They do very good job for circle shape cutting for granite and concrete. The inner hole diameter is 7/8"-5/8", since washer/bushing/spacer included. (b) 6 Pieces of 5" / 5 Inch / 125mm Diamond Double Row Segment cup wheel for concrete stone travertine surface smoothing. The inner hole diameter is 7/8"-5/8", since washer/bushing/spacer included.