... size:20mm, 32mm available Features:1. Diameter:50mm-400mm available2. Diamond grit: #100, #150, #200, #300, #400, or upon your ... or as your request5. Type: straight wheel, bowl-shaped wheel, cup-shaped wheel,dish-shaped wheel, wheel tapered one side or ... the largest professional manufacturer of diamond tools with a history about 30 years experience in the east-China. Diamond Cup grinding Wheel and ...