The present invention provides a composition comprising synergistic amounts of a compound of the formula wherein X, E, R, A and Z are as defined herein, and at least one fungicidal active compound as defined herein. The pump rod clamp comprises a central housing having a longitudinal bore for receiving a pump rod, a plurality of clamping members receivable within the central housing, and one or more actuators to cause the clamping members to be moved between an activated position where they grippingly engage the pump rod and a deactivated position where they are released from contact with the pump rod. Accordingly, images are displayed on the image display system at a constant interval. For example, the prochiral substrate can be a ketone and the chiral catalyst can be a chiral oxazaborolidine. The first insertion portion and the second insertion portion are symmetrical to each other with respect to the engaging portion.