Lewmar, Synchro Block double HF with dog muzzle, black

The Lewmar Synchro Block Double HF with dogbottom and shackle and two rollers is perfect for making tackle systems on board. Optimised sheave symmetry, a free-spin bearing and self-aligning block heads minimise friction while increasing the efficiency of the block in a mainsheet system by up to 40% compared to other blocks. Each block component perfectly synchronises line movement, which means a lighter and smoother transfer of load from sail to deck with minimum rope wear. Needle bearing blocks such as the Lewmar Synchro Block are typically used for high and static loads as halyard swivels, mainsheet systems, mast track blocks, masthead blocks or boom vang blocks. Features:

- Stainless steel support for maximum load-bearing capacity and long-lasting use
- Fibreglass-reinforced side sections to protect lines from jamming
- Innovative design with "tool-free swivel lock
- Large pulley diameter minimises line friction
- Heavy-duty free-spin bearing - reduces axle diameter for maximum efficiency
- Switchable from swivelled to fixed block

Disc size	Disc Ø	SWL kg	Optimal sheet	Sheet max.
S	50mm	450kg	6mm	10mm
M	60mm	800kg	8mm	10mm
L	72mm	1100kg	10mm	12mm