Perko North River Style Rowlock HornsThese rowlock horns are constructed of plain zinc alloy to provide maximum durability and long lasting use. They lock by the turn button from the inside or by the key from the outside. Sold in pairs, these horns will provide increased satisfaction for any buyer.Features: Locks By Turn Button From Inside Or Key From Outside; Plain Zinc Alloy Construction; Sold In Pairs; Specifications: 1/2" Shank; 1-3/4" Shank Length; 1-3/4" Distance Between Horns;