Sumeng abrasives - manufacture and exporter of reinforced depressed center grinding discs, cut-off discs, vitrified bond grinding wheels, For our products information please visit our website. Cut-off wheel (Type 41) Center-depressed wheels (Type 27) Center-depressed cut-off wheels (Type 42). Cut-off wheels: 100 x 2.5 x16, 115 x 3 x 22, 125 x 3 x 22, 180 x 3 x 22, 230 x 3 x22, 300 x 3 x 25.4, 355 x 3 x 25.4, 400 x 3 x 25.4. Grinding wheels 100 x 6 x 16, 115 x 6 x 22, 125 x 6 x 22, 180 x 6 x 22, 230 x 6 x 22.