Greenfield Products 508 Vinyl-Coated Mushroom Anchor, 8 Pound Cast Iron, Black

The Greenfield Products 508 is a traditional cast iron mushroom anchor finished with a black vinyl (PVC) coating for added protection and easy handling. Its mushroom shape settles into soft bottom conditions and creates suction-based holding power, making it a dependable choice for light-duty anchoring rather than high-load holding in hard or rocky bottoms.

This anchor is sized for small craft, personal watercraft (PWC), canoes, and kayaks, and it also works well as a second anchor aboard larger boats. Beyond primary anchoring, the 508 doubles as a drag anchor for fishing in current and can be used to hold small buoys or markers in place. It is designed for boats under 10 feet and has a working weight of 7 to 8 pounds, with a recommended scope (anchor line length to water depth) ratio of 5:1. Because weights can vary slightly with metal and coating content, listed weight is approximate.

Built from solid cast iron for long-term durability, the black vinyl coating helps resist scuffing on hulls and decks and reduces the risk of rust transfer compared to bare cast iron. It is best suited to calm to moderately soft conditions and light-duty use rather than heavy current or rocky seabeds.

Specifications

• Brand: Greenfield Products
• Manufacturer Part Number: 508
• Material: Cast Iron
• Coating: Vinyl (PVC), Black
• Color: Black
• Weight: 8 pounds
• Working Weight Range: 7 to 8 pounds
• Recommended Scope Ratio: 5:1 (line feet to depth feet)
• Recommended Boat Length: Under 10 feet
• UPC: 025552508019

Frequently Asked Questions

What size boat is the Greenfield Products 508 mushroom anchor designed for? The Greenfield Products 508 is designed for boats under 10 feet, making it suited to small craft such as kayaks, canoes, and personal watercraft.

How much does this anchor weigh? The Greenfield Products 508 has a working weight of 7 to 8 pounds; listed weight is approximate since it can vary slightly with metal and coating content.

What is this anchor made of? It is made of solid cast iron with a black vinyl (PVC) coating that helps protect against scuffing and rust transfer.

Can the 508 anchor be used on a larger boat? Yes, the Greenfield Products 508 mushroom anchor can be used as a second anchor on larger boats in addition to its primary role on smaller craft.

Is this anchor suitable for holding a boat in current? The 508 mushroom anchor is recommended for soft conditions and light-duty holding; it also works well as a drag anchor for fishing in current rather than as a primary anchor in strong current.

What scope (line-to-depth ratio) should I use with this anchor? A scope ratio of 5:1 is recommended for the Greenfield Products 508, meaning 5 feet of anchor line for every foot of water depth.

Can I use this anchor to hold a buoy or marker in place? Yes, the 508 mushroom anchor is suitable for holding small buoys or markers in addition to anchoring small craft.

Does the vinyl coating wear off over time? The black vinyl (PVC) coating on the Greenfield Products 508 is applied over cast iron to resist scuffing and reduce rust exposure during normal anchoring use.

What bottom conditions work best with a mushroom anchor like this one? Mushroom anchors such as the Greenfield 508 perform best in soft bottom conditions, where the shape settles in and creates holding suction, rather than hard or rocky bottoms.

Is the Greenfield 508 a good fit for kayaks and canoes? Yes, the 508 mushroom anchor is sized and weighted specifically for small craft including kayaks, canoes, and personal watercraft.

What comes with the anchor? The Greenfield Products 508 is the mushroom anchor itself, cast iron with a black vinyl coating; anchor line is not included.