The Rock Steady V-block is quality all metal machined aluminum. The 90 deg V fits any size aircraft spreader bar, bi-plane strut, or wing strut from a J-3 to a Caravan. The flat side of the block has two 1/4-20″ threaded holes.
The Rock Steady suction cup is very different from all other suction cup mounts. This Rock Steady mount is low profile with quality metal parts and a stable suction cup design. This is a suction cup with Rock Steady dovetail. This base fits any of our Rock Steady ball mounts.