Expansion Side Board 3/8" Screw Fixed for ARRI Alexa 35, Articulated Mount Plate AMP-1. Fixed with 3/8 screws, 180 ° Swivel and Tilt Adjustable via wing screws. Fixed Screw: 3/8" Screw. Multiple 1/4" and 3/8" screw mounting holes, replacing screw positions, wider versatility.
eBay