Features： 1、High Strength Materials: Crafted from polished 316 grade stainless steel, the boat oar lock is rustproof, and capable of withstanding harsh weather conditions. The sturdy 1/2in shaft is resistant to daily scratches. The U cup open mouth design offers greater convenience. 2、Efficient Propulsion: The canoe kayak oarlock is a simple method for propelling a boat forward in the water, and it is the preferred choice for most individuals when landing. 3、Easy Installation: Pre drilled mounting holes allows for easy installation. The clamp on the oarlock securely fastens to the oar with an adjustable bolt, eliminating the need for drilling. 4、Dimensions: Total Length: 5 3/16 inches (131.5 mm); Shaft Outer Diameter: 1/2 inch (12.8 mm); Shaft Length: 2 1/8 inches (54.5 mm); Inner Diameter: 1 7/8 inches (48.0 mm). 5、Universal Application: Heavy duty oar lock can be used for most boats, is suitable for small boats, canoes, kayaks, dinghies, lifeboats, water rafts, and more. Specification： Item Type: Stainless Steel Heavy Duty Oarlock Material: Stainless steel Fitment: Suitable for boats, yachts, kayaks, canoes, small boats Package List： 2 x 5 3/16 Inch?Oarlock