Diamond Cup wheels -- Double Row. D110mm*22.2mm; segment size: 5*8*30mm; segment number:16 pieces. D115mm*22.2mm; segment size: 5*8*30mm; segment number:18 pieces. D125mm*22.2mm; segment size: 5*8*30mm; segment number:20 pieces. D180mm*22.2mm; segment size: 5*8*37mm; segment number:24 pieces