Ronstan Series 40 Orbit BB Quad Block, Swivel Shackle, 1320lb MWL

Experience the pinnacle of marine hardware performance with the Ronstan Series 40 Orbit BB Quad Block. Engineered for demanding sailing applications, this block delivers class-leading dynamic and static load ratings in a lightweight, compact design. Its advanced 2-stage ball bearing system ensures incredibly smooth and efficient line trimming, empowering sailors to maintain precise control. Upgrade your rigging with Ronstan's renowned strength and reliability today.

Key Specifications & Benefits:

• Optimized Sheave Diameter (1-9/16 in. / 40mm): Designed for various line types, ensuring smooth and efficient operation across your rigging.
• Maximum Rope Compatibility (up to 3/8 in. / 10mm): Accommodates common sailing lines for versatile rigging options.
• Exceptional Strength (1320 lb. / 600 kg MWL): Provides outstanding working load capacity for high-stress mainsheet, halyard, and control systems.
• Robust Breaking Load (2650 lb. / 1200 kg B.L.): Offers a significant safety margin, ensuring reliable performance even under extreme conditions.
• Ultra-Lightweight Design (6.8 oz. / 193g): Features toughened glass fiber reinforced nylon cheeks, minimizing added weight to your rigging for improved performance.
• Low-Friction 2-Stage Ball Bearing System: Ensures effortless trimming and superior control, reducing wear on lines and increasing efficiency.
• Versatile Swivel Shackle Head: Can be freely rotated or locked at 0° or 90° for flexible and secure rigging configurations.

Compatibility & Applications:

• Ideal for mainsheet systems and spinnaker sheets on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft).
• Also suitable for halyard, vang, and backstay applications on boats up to 9m (30ft), as well as control lines on larger yachts.