The Ronstan Series 40 Orbit Double Block with becket and swivel shackle provides a balance of strength and performance for various marine rigging applications. These blocks feature a 2-stage bearing system that utilizes ball bearings for minimal friction, supported by a secondary full-contact bearing to ensure efficiency across the full working load range. The cheeks are constructed from lightweight, glass fiber-reinforced nylon, offering a high-strength alternative to traditional stainless steel straps.
- Sheave Diameter: 1-9/16"
- Maximum Rope Diameter: 3/8"
- Pin Diameter: 5/32"
- Maximum Working Load: 1320 lb.
- Breaking Load: 2650 lb.
- Weight: 4.6 oz.
These blocks are suitable for mainsheet systems and spinnaker sheets on dinghies, off-the-beach catamarans, and sportsboats up to 8m (26ft), as well as halyard, vang, and backstay applications on boats up to 9m (30ft).
Product facts
- CT SKU
- CT-112189
- Model / MPN
- RF48210
- UPC / GTIN
- 9316800625529
- Package dimensions
- 2" X 3" X 4"
- Package weight
- 0.3 lb
Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.
Shipping & returns
Shipping & returns
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Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
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Need help choosing?
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