Sea Dog Clamp-On Oar Locks (Pair)These clamp-on oar locks feature a standard 1/2" x 2" pin and fits oars between 3/4" and 1-7/16". Recommended for freshwater use, these oar locks attach quickly to the oar shaft with an easy-to-install bolted clamp. Sold in pairs, these clamp-on oar locks are composed of zinc-plated steel construction, allowing for maximum durability.Features: Zinc-Plated Steel Construction; Easy-To-Install Bolted Clamp; Attaches Quickly To The Oar Shaft; Standard 1/2" x 2" Pin; Fits Oars Between 3/4" and 1-7/16"; Recommended For Freshwater Use; Sold In Pairs; 582060-1 A: 1/2"; B: 2"; C: 1"; D: 5-3/8"; ;