Compatible with 1-1/2″ Tele-Outrigger Poles. Ideal for mid-range sized boats 23′ to 35′. Cast stainless steel type 316L and machined aluminum construction. Ideal for hardtops up to 2-1/2″ thick. 180� arm swing. Strong, locking head allows perfect positioning. Allows for horizontal rotation from under the T-top. Outward rotation handle, which features detents every 22.5� that locks the arm in place. Dimensions: 15-1/2″ H x 13-1/4″ W. Plate dimensions: 6″ x 4″. Sold in pairs.