Oar lock Insert sleeve for rowboat

thingiverse

Oar lock insert replacement sleeves for rowboats are easily misplaced and often boats don't even come equipped with them, which leads to sloppy rowing. These inserts slide into the oarlock mount, and the oar pins fit snugly into them when in use. As you can see from the measurement diagram I created, these sleeves were made to fit our boat precisely, but they might also work for a standard 5/8-inch oarlock mount setup that accommodates 1/2-inch oar pins.