The NRS Superston is the toughest whitewater open oarlock available - anywhere. Built to perform flawlessly under the most demanding and extreme conditions.
  - Our proprietary manganese bronze Superston alloy gives you amazing strength and outstanding rebound memory. Built tough for the toughest jobs, they are used by outfitters the world over.
  - The 3 1/2" long shaft is precision turned to a 5/8" diameter and is drilled for a split ring fastener (included). They fit snugly in NRS Oar Mounts.
  - The horn opening is 1 5/8" with a 2 3/8" inside diameter.
  - Compare the measurements under the Specs tab to those of your oar shaft to ensure a good fit with these oarlocks.
  
 Specifications
    | Weight: |  1 lb. each |  
  | Material: |  Manganese and bronze alloy construction |  
  | Horn Opening: |  1 5/8" |  
  | Inside Diameter: |  2 3/8" |  
  | Shaft Diameter: |  5/8" |  
  | Shaft Length: |  3 1/2" |  
  | Total Length: |  6 7/8" |  
  | Includes: |    - Split ring with each oarlock
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  Sizing
     |  A |  B |  C |  D |  E |  
    | NRS Superston Oarlocks |  3 5/8" |  1 5/8" |  2 3/8" |  6 3/4" |  5/8" |