SD10 SD10 (CONCAVE)DiameterFlush HoleButton Dia * QtyWeightProduct NoMMInchOuterFrontKgLbs25410219x1216x24105231.4236-S1LII254S27010 5/8319x1216x25110242.4436-S1QII270S28011319x1216x27115253.4636-S1QJI280S29211 1/2319x2116x23120264.4836-S1UII292S30512319x1819x15125275.536-S1UJI305S16X1333013319x1819x18135297.5436-S1UJI330S16X13