RWO
RWO V Jammer Single Block R4960
Professional-grade marine product — trusted by boaters across the UK.
Tax included. View shipping policy
Klarna & PayPal available at checkout
The RWO V Jammer Single Block R4960 is designed for seamless rope handling, featuring an innovative jammer system. Ideal for boating applications, it enhances control and efficiency in sail and rigging operations. Description The RWO V Jammer Single Block R4960 is engineered f...
The RWO V Jammer Single Block R4960 is designed for seamless rope handling, featuring an innovative jammer system. Ideal for boating applications, it enhances control and efficiency in sail and rigging operations.
Description
The RWO V Jammer Single Block R4960 is engineered for superior performance in marine applications, designed specifically for use in sailing and rigging. Constructed from high-strength materials, this single block features a robust design that ensures durability and longevity in harsh marine environments. The R4960 is equipped with a sheave that accommodates ropes up to 12mm in diameter, providing flexibility for various line sizes. Its efficient V jammer system allows for secure rope locking, preventing unintentional release under load, which is crucial for maintaining control during sailing maneuvers. The block’s low-friction design facilitates smooth and efficient operation, enhancing overall performance whether you are hoisting sails, adjusting halyards, or securing equipment onboard. Typical use cases for the RWO V Jammer Single Block include sailboat rigging, dinghy racing setups, and general deck applications where reliable line handling is paramount. Marine users will benefit from its lightweight yet strong construction that minimizes unnecessary weight on the vessel while ensuring safety and efficiency in operation. Overall, the RWO V Jammer Single Block R4960 stands as a trusted choice for marine professionals and enthusiasts alike, combining precision engineering with practical functionality for superior performance on the water.
Specification
| Model | R4960 |
| Type | Single Block |
| Weight | 0.68 kg (1.5 lbs) |
| Sheave Diameter | 60 mm (2.36 in) |
| Maximum Working Load | 500 kg (1102 lbs) |
| Breaking Load | 1500 kg (3307 lbs) |
| Material | Aluminum with Anodized Finish |
| Sheave Material | Acetal |
| Pin Diameter | 6 mm (0.24 in) |
| Max Line Diameter | 10 mm (0.39 in) |
| Load Direction | Horizontal |
| Mounting Type | Becket with swivel head |
| Certifications | CE Certified |
| Usage | Marine applications, Sailing |
Why buy from Marine Chandlery?
- UK marine specialists, based in North Shields
- Next-day UK delivery available
- Same-day collection from our store
- Expert advice before and after purchase
- Carefully selected marine-grade products
- Secure checkout & trusted payment options










