R & D Marine 5" x 2.44" Shear Loaded "Super Mounts". The R & D Shear Mount is a low height rectangular mounting giving the best combination of lateral stiffness. Designed for marine use, accepts propeller and engine thrust in both directions. * Offers a fail safe design * R & D Mounts are height adjustable * Pre-loaded to reduce movement (0.09) * Slotted holes in base to assist in alignment * Mount types to fit all applications. Note: Capacity is calculated by engine weight divided by the number of mounts used.