Bass Pro Shops Fluke Anchors are made of heavy-gauge steel with wide flukes for extremely strong holding power. Steel is galvanized to resist corrosion. Weights: 8 lbs. for 15 to 17 boats. 10 lbs. for 17 to 20 boats. 16 lbs. for 20 to 24 boats. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Anchor.