Boat part number 1113541 is a new river anchor from Extreme Max part number 3006.6689 . River anchors are intended for use in lakes and rivers with strong currents or drifts. The design uses a combination of weight and flukes for a firm hold even in windy conditions. The large flukes hold well in muddy rocky or weed/grass bottoms. Vinyl coating on anchor body and flukes protects boat surfaces. For best hold lower anchor slowly to allow flukes to penetrate. This anchor is rated 12 lbs and is covered in black vinyl. Ring inside diameter measures approximately 3/4 Dia. overall. Manufacturer Features: 12 lb. river anchor Designed to use a combination of weight and flukes for hold For use in lakes / rivers with fast currents and drift areas holds in high Works on hard bottom surfaces muddy or rocky bottom surface and grass/weeds UV-resistant vinyl coating protects boat surfacesManufacturer s Note: This anchor design is intended for current/high drift environments only. Specifications: Part Manufacturer: Extreme Max Part Number: 3006.6689 UPC: 814166026558 Color: Black Finish: Coated Overall Dimensions: 10 H x 9 Dia. Ring Size: 3/4 Dia. Sold as seen in pictures. Customers please note every computer shows colors differently. All measurements are approximate. Hardware and instruction / installation manual not included.