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. 15 lbs. Protects boat from scratches and abrasions Designed for rivers and mud-bottom lakes Great to use from pontoon and bass boats | Coated 15-lb. River Anchor in Black