Ronstan RF41210 40mm Double Block with Becket | Swivel Shackle HeadThe Ronstan RF41210 is a compact, light duty 40mm double pulley block with becket and a non locking swivel shackle head, perfect for efficient line handling on dinghies, small keelboats, and tenders. Part of the Ronstan 40 series, this block is built for control systems where multiple lines need smooth, flexible routing with a tie off option. The integrated becket provides an anchor point for purchase systems, while the twin sheaves allow for dual

Lashing attachment system – flexible

Engineered for high-performance skiffs

it withstands harsh marine environments and regular use

Andersen Winch 40 – Classic 2-speed manual operation

100 % 316 stainless-steel housing

The 90° angled design allows hoses to be routed cleanly around corners and confined spaces

it provides dependable buoyancy and freedom of movement for safe and comfortable wear on the water

Powerful automatic steering performance

delivering high strength and low-friction performance in a compact

Compatible with all RAILBLAZA accessories

Specification Details Voltage 12 V Pull Capacity 320 kg / 700 lb Chain Size 6–7 mm DIN 766 / ¼″ G4 / ¼″ BBB Rope Capacity up to ½″ (12 mm) Housing 100% 316 Stainless Steel Manual Recovery Tool Standard ½″ socket Installation Type Above-deck (horizontal fit) Warranty 5 years

Compact & Durable