Compatible with OneBlade models QP1324, QP1424, QP1624, QP1924, QP2724, QP2734, QP2824, QP2834, QP4530, QP4631, QP6506, QP6507, QP6531, QP6542, QP6552, QP6652.
NOT compatible with OneBlade models - QP2510, QP2511, QP2520, QP2521, QP2522, QP2523, QP2530, QP2570, QP2620, QP2630, QP6510, QP6520, QP6550, QP6650.