➤ Made of 316 stainless steel, very tough and corrosion-resistant.➤ Inside diameter of oarlock is 2",Fits most standard size oars,Package including 2 Oarlocks.➤ The clamp on Oarlock is firmly fixed on the propeller with an adjustable bolt without drilling.➤ Strong corrosion resistance and durability in saltwater circumstances, ideal for kayak, canoe, marine boat, dinghy, lifeboat, water raft boat, yacht, and so on.➤ If you have any questions about our products, please contact us in time, and we are glad to serve you.