Ronstan RF15212 15mm Double Block Becket Loop Head – Series 15 Pulley NZ
The Ronstan RF15212 Series 15 Double Block with Becket & Loop Head is a compact, ultra-lightweight, and high-performance sailing pulley designed for efficient load handling and increased mechanical advantage. Featuring dual 15mm acetal sheaves running on stainless steel ball bearings, it delivers exceptionally smooth, low-friction performance for precision control systems.
Built with UV-stabilised acetal sheaves and 316 stainless steel cheeks, the RF15212 provides excellent durability and corrosion resistance in New Zealand’s harsh marine conditions. Its loop head with integrated O-ring allows flexible lashing attachment while keeping the running line separated from the fixing point—reducing wear and improving efficiency.
The integrated becket enables additional purchase systems, making this block ideal for more advanced rigging setups such as vangs, cunninghams, outhauls, and shock cord tensioning systems on dinghies and performance yachts. Key Features
- Double 15mm sheaves for increased mechanical advantage
- Ball bearing system for ultra-low friction performance
- 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 sheaves for durability
- Lightweight, compact, and maintenance-free design Specifications
- Sheave Diameter: 15mm
- Max Rope Diameter: 5mm
- Maximum Working Load: 240kg
- Breaking Load: 700kg
- Weight: Approx. 24g
- Materials: Acetal sheaves, stainless steel ball bearings, 316 stainless cheeks
- Head Type: Loop head with O-ring and becket Why Choose the Ronstan RF15212?
For New Zealand sailors, the RF15212 provides an ideal balance of lightweight performance, durability, and versatility. The addition of a becket allows more advanced rigging configurations, making it perfect for high-efficiency control systems on dinghies and small yachts.
Its corrosion-resistant construction and smooth operation ensure reliable performance in both coastal cruising and competitive sailing conditions across NZ.