These marine anchors from Overton's are undercoated for extra adhesion, then coated in a thick, durable PVC to protect boat finishes from the scratches and abrasions that occur through normal use. Cast iron anchors with black vinyl coating are designed for rivers and mud-bottom lakes. Great for use from pontoon and bass boats. 12 lbs. Protects boat from scratches and abrasions Designed for rivers and mud-bottom lakes Great to use from pontoon and bass boats | Coated 12-lb. River Anchors in Black