![Harken 45mm Triple Element Block w/Swivel [6240] Marine Hardware | Accessories GMI™ 10/20 Marine Instrument](https://cdn.shopify.com/s/files/1/1592/4149/products/78756XL.jpg?v=1636001129)
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GMI™ 10/20 Marine Instrument
4 or 5 engines
Retail version includes 5 amp fuse and holder (operating switch not included)
KeelGuard® Size: 4'
Harken 45mm Triple Element Block w/Swivel [6240] Marine Hardware | Accessories GMI™ 10/20 Marine Instrument45mm Triple Element Block with Swivel Element blocks introduce sideplates that combine forged aluminum and compound curves for strength. They are simultaneously contemporary and very robust. Elements design pairs the minimum amount of metal required to protect the sheave with a proven journal bearing. So size for size, Element is priced significantly lower, than our previously least expensive blocks. Sideplates are hardcoat anodized to resist
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