Lewmar's Synchro Foot Blocks use Alloy cheeks, fixing isolators and, to prevent sealant from getting into the sheave, a molded base plate.
You'll find all three sizes in both standard and jamming formats - they can easily be stacked to form a double foot block.
Features:
Standard and jammer option can be double stacked
Two-step jammer action keeps lever close to side of the block
SS hollow cast jammer holds fast without tearing the line
Optimized jammer shape holds line central on the sheave
Tough alloy cheeks
Synchro sheave loads match the same sized blocks
Twin fixings with insert
Wide head for a solid base, block will not "roll" in the deck
Molded base plate with recess to hold sealant around fixing screws and prevent ingress onto the bearing and sheave