leash plug

Circular plastic device set flush to the deck of a surfboard near the tail as a fastening point for a surf leash. The leash plug was invented by California surfboard manufacturer Con Colburn in 1971, and today's plug is much the same as Colburn's prototype: about one-and-a-quarter inches in diameter and three-quarter-inch deep, with a plastic cross-pin around which the nylon leash-end is tied. Bef...