Swivl-Eze Lock'N-Pin 3/4" Pin Seat Mount - Zinc CoatedSpecifications:Zinc-platedTilt: 3 degreesPin (inch): 2-3/4" Steel Pin with SpringABYC Code: B (not to be used at the helm/driver position)Installed Height (inch): 2"#1 supplier of 3/4" pin seating hardware. Here's why:The 3/4" system gives you outstanding economical performanceThe design is proven by decades of experienceThe Difference:The patented Lock'N-Pin system leads the industry in safetyLock'N-Pin prevents unintentional detachment for seat mounts, posts, and basesLock'N-Pin products exceed ABYC Standard H31.6.1Not recommended to interchange with other manufacturers' products