Fenderhooks are carefully hand crafted, beginning with the stainless steel shank, which is grade 316. It is sheared to the proper length, the corners are rounded with a 1/2 radius and polished smooth, so in the unlikely event of being dropped on the deck, no sharp corners will pierce the deck or cut the leathers. As an added benefit to rounded corners, ‘dog eared’ square corners are eliminated. Countersunk holes are punched for thru bolting of hardware using acorn nuts or locking aircraft nuts.