Neewer Professional Aluminum Alloy Quick Shoe Plate Adapter with 1/4 3/8 inches Screw for DSLR Camera Camcorder Tripod Monopod,Compatible with Manfrotto 501HDV 503HDV 701HDV 577/519/561/Q5 (Red)

Thanks to Amazon for delivering it on next day. The item is made of a strong metal and all parts are high quality. You can easily remove one of the 1/4 or 3/8 screws. I use the item with a Coronado AZS tripod and Coronado PST 0.5A scope that weighs 4.5 kg. The item significantly improved convenience of using the right fine tuning knob, removing and re-attaching scope and enabled better positioning the scope back and forward on the mount.