SCOTTYPedestal Swivel Mount gives a full 360 rotation with 16 locking positions. Quick fastening stainless steel mounting knobs for easy set-up and removal. Compatible with all Scotty Downriggers.New larger lock buttonMounting dimensions: 5 1/2" x 5 1/2" x 4"Bolting dimensions: 4 1/2" x 3 1/2"360 rotation with 16 locking positionsCompatible with all Scotty Downriggers