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

Elevate your marine rigging performance with the Ronstan Series 40 Orbit BB Double Block. Engineered for demanding sailing applications, this block delivers a superior balance of strength, reliability, and low-friction efficiency. Its class-leading dynamic and static load ratings ensure dependable operation even under extreme conditions. Upgrade your sailboat's systems for smoother, more precise control.

Key Features & Benefits:

• Two-Stage Ball Bearing System: Minimizes friction across the full working load range for effortless and efficient trimming of sails and lines.
• Exceptional Load Ratings: Offers a Maximum Working Load (MWL) of 1320 lb. (600 kg) and a Breaking Load (BL) of 2650 lb. (1200 kg), providing superior strength for critical rigging.
• Lightweight & Durable Construction: Features toughened, glass fiber reinforced nylon cheeks and high compression strength acetal sheaves and ball bearings, delivering robustness without added weight.
• Corrosion-Resistant Hardware: Head fittings and hubs are crafted from grade 316 stainless steel, ensuring long-lasting performance in harsh marine environments.
• Compact & Low-Profile Design: Integrates seamlessly into your rigging, reducing bulk and improving aesthetics.

Applications:

• Mainsheet systems and spinnaker sheets on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft).
• Halyard, vang, and backstay applications on boats up to 9m (30ft).
• Control line applications on larger yachts.

Specifications:

• Sheave Diameter: 1-9/16 in. (40 mm)
• Maximum Rope Diameter: 3/8 in. (10 mm)
• Pin Diameter: 5/32 in. (5 mm)
• Weight: 4.2 oz. (118 g)