Features: 1.304 Stainless Steel: Clamp on rowlock is constructed with polished finish 304 grade stainless steel, with exceptional performance. It ensures long lasting use, even in saltwater circumstances. 2.Wide Compatibility: The marine oarlock is designed to fit various watercraft such as kayaks, canoes, marine boats, dinghies, lifeboats, water raft boats, yachts, and more. 3.Easy Installation: Clamp on oarlock can be conveniently attached to the oar with just one adjustable bolt. No drilling is required, making it a hassle free and time saving option. 4.Stable and Secure: The boat oarlock provides a secure and stable connection between the oar and the boat. It ensures smooth rowing and minimizes the risk of losing or damaging the oar during water activities. 5.Resilient to Chemical: With strong rust resistance properties, clamp on oarlock offers reliable performance over time, even in harsh saltwater conditions. Specification: Item Type: Clamp On Oarlock Material: 304 Stainless Steel Size: Tube Size 1-5/8in, Length: 2in (52mm), Shaft Diameter: 1/2in (12.8 mm) Adjustable Diameter: Fits paddles 1.34in - 1.8in (34 mm - 46 mm). Function: Mounting plate rotates clockwise to prevent rowlock from coming off, release line lock requires counterclockwise rotation Application: Suitable for Marine, Boat, Yacht