Defender offers one of the widest selections of marine sailboat blocks in a wide range of sizes and materials. Micro Blocks, Dinghy Blocks, Mid-range Blocks, Big Boat Blocks, Snack Blocks and Specialty Blocks from Lewmar, Harken, Schaefer, Ronstan, Selden, and Antal are in stock at the lowest prices. If you do not see the blocks you need we can get probably them call 800-628-8225 or contact us.
