Home Hardware & Fasteners Canvas Fasteners Extend-A-Snap (4 Pack) Handi-Man Marine Extend-A-Snap (4 Pack) $10.39 Extend-A-Snap (4 Pack) quantity Add to cart Product Details Product Details Sold 4 Per Pack. Avoid shrinkage of canvas covers. With the Extend-A-Snaps, gain 3/4″ of an inch per side of the cover. These snaps let you stretch your boat cover to reach those hard-to-get-snaps.
