SeaLux 316 Stainless Steel I.d. 2-1/4" Round Oarlock Heavy Duty 1/2"x 2" shaft for boat/ kayak (Pair) SeaLux 316 Stainless Steel I.d. 2-1/4" Round OarlockDurable 316 Stainless Steel heavy-gauge cast steel with a mirror polish finish offers long-lasting performance.Inside diameter of oarlock is 2". Fits most standard size oars. Sold in pairs.Shank dimensions 1/2"x 2-1/8" (L), comfortable shaft, good controlweight 14 oz.Round oarlocks stay on the oar once leathers and buttons are applied whereas the oar can be removed from horn oarlocks. Round oarlocks are available in #0 (2" inside diameter)and #1 (2 1/4" inside diameter) . Oars and oarlocks, as well as canoe / kayak paddles, are the simplest method of propelling your boat through water. No motor is required, no expensive sail and rigging package needed, you simply need your oars, paddles and oarlocks. Rowing is the way most people get out to their moored boat, or into shore while cruising.