Harken 80mm Aluminum Element Mastbase Block Double — Swivel LSA All Purpose Maintenance RIB Cleaner

All Purpose Maintenance RIB Cleaner is expertly formulated to tackle PVC

4-dioxane-free ∙ ethoxylated alcohol-free ∙ formaldehyde-free ∙ triclosan-free ∙ filler-free ∙ petroleum-free ∙ gluten-free ∙ hormone disruptor-free ∙ carcinogen-free — and simply worry-free

Aftermarket Equivalent: RecMar REC21368879

while built in frost protection prevents damage from colder weather

Harken 80mm Aluminum Element Mastbase Block Double — Swivel LSA All Purpose Maintenance RIB CleanerElement 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 corrosion. A tough composite bearing sheave