Harken 80mm Single Mastbase Swivel Element Block

The Harken 80mm Single Mastbase Swivel Element Block uses sideplates that combine forged aluminum with compound curves for strength, giving it a modern look without sacrificing the robustness a working block needs.

The design pairs the minimum amount of metal needed to protect the sheave with a proven journal bearing, which is why Element blocks are priced noticeably lower than Harken's other block lines at the same size.

Hardcoat-anodized sideplates resist corrosion, and a tough composite bearing sheave holds up to long-term service without the rust issues a metal bearing would eventually show. Built as a mastbase model, it mounts directly at the masthead for halyard turning rather than as an inline block. Rated to a 4850-lb maximum working load. Explore more sailing hardware.

• Rated to a 4850-lb maximum working load
• Hardcoat-anodized aluminum sideplates resist corrosion
• Composite bearing sheave for long service life
• Priced lower than Harken's other blocks at this size