Harken 80mm Single Element Block Mastbase w/Swivel [6221] Brand_Safe-T-Alert Trailer Hub Kit

Trailer Hub Kit

Constructed of injection molded polypropylene with a structural honeycomb lid for superior rigidity and strength

Formulated to be effective by hand or by machine

CRI:  80+

Mounting hardware for the XNT transom mount transducers

Harken 80mm Single Element Block Mastbase w/Swivel [6221] Brand_Safe-T-Alert Trailer Hub Kit80mm Single Element Block Mastbase 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