SD4 SD4 (FLAT FACE)DiameterFlush HoleButton Dia * QtyWeightProduct NoMMInchOuterFrontKgLbs1054 1/8214x812x68.017.6336-41967105S1104 1/3214x812x68.518.7336-41967110S1154 1/2214x812x69.019.8336-41967115S1214 3/4214x812x79.320.4936-41977121S1275212x814x89.520.9336-41989127S1305 1/8214x814x810.022.0436-41989130S1656 1/2216x814x1026.057.3236-4190C165S SD4 (CONCAVE)DiameterFlush HoleButton Dia * QtyWeightProduct NoMMInchOuterFrontKgLbs1054 1/8214x812x67.817.1936-41767105S1104 1/3214x812x68.318.2936-41767110S1154 1/2214x812x68.719.1736-41767115S1275214x814x79.220.2736-41779127S1305 1/8214x814x79.721.3736-41779130S SD4 (CONVEX)DiameterFlush HoleButton Dia * QtyWeightProduct NoMMInchOuterFrontKgLbs1054 1/8214x812x68.017.6336-41867105S1104 1/3214x812x68.518.7336-41867110S1154 1/2214x812x79.019.7336-41877115S1275214x814x89.520.9336-41889127S1305 1/8214X814X810.022.0436-41889130S