Ronstan RF15111 15mm Single Block Becket Loop Head – Series 15 Pulley NZ
The Ronstan RF15111 Series 15 Single Block with Becket & Loop Head is an ultra-lightweight, high-performance sailing pulley designed for precision control systems requiring low friction, minimal weight, and added purchase capability. Featuring a 15mm acetal sheave running on stainless steel ball bearings, it delivers exceptionally smooth, efficient line handling.
Constructed with UV-stabilised acetal components and 316 stainless steel cheeks, the RF15111 provides excellent durability and corrosion resistance in New Zealand’s harsh marine conditions. The loop head with integrated O-ring allows flexible lashing attachment while separating the running line from the fixing point, reducing wear and improving performance.
The addition of a becket enables tie-off or additional purchase systems, making this block ideal for more complex rigging setups such as vangs, cunninghams, outhauls, and shock cord systems on dinghies and performance yachts. Key Features
- 15mm single sheave with ball bearings for ultra-low friction
- Integrated becket for additional purchase systems
- Loop head with O-ring for flexible lashing attachment
- 316 stainless steel cheeks for corrosion resistance
- UV-stabilised acetal sheave for durability
- Extremely lightweight (approx. 9g) for performance sailing
- Ideal for vang, cunningham, outhaul, and control line systems Specifications
- Sheave Diameter: 15mm
- Max Rope Diameter: 5mm
- Maximum Working Load: 120kg
- Breaking Load: 550kg
- Weight: Approx. 9g
- Construction: Acetal sheave, stainless steel ball bearings, 316 stainless cheeks
- Head Type: Loop head with O-ring and becket Why Choose the Ronstan RF15111?
For New Zealand sailors, the RF15111 offers maximum performance in a compact form, combining ultra-lightweight design with the added versatility of a becket. This makes it ideal for high-efficiency rigging systems where space, weight, and performance are critical.
Designed for reliability and precision, it is widely used in dinghy racing and performance sailing setups, delivering smooth operation and long-lasting durability in coastal and offshore conditions.