This Ronstan Series 20 triple ball bearing block features a becket and a 2-axis shackle head, designed for high-performance control lines. Engineered for low friction and high load capacity, it is a versatile choice for dinghy applications including vangs, cunninghams, and traveller controls.
Key Features:
- Precision-molded Acetal sheaves with stainless steel or Torlon ball bearings
- Two-way head can be locked at 0° or 90°
- UV-stabilized and impact-resistant materials for durability
- Manufacturer part number: RF20312
Specifications:
- Sheave diameter: 20mm (3/4")
- Maximum rope diameter: 6mm (1/4")
- Pin diameter: 4mm (5/32")
- Maximum Working Load (M.W.L.): 400kg (880 lbs)
- Breaking Load (B.L.): 850kg (1,870 lbs)
- Weight: 64g (2.3 oz)
- Materials: Grade 316 stainless steel load strap/head, fiber-reinforced nylon cheeks, UV-stabilized Acetal sheave
Product facts
- CT SKU
- CT-103687
- Model / MPN
- RF20312
- UPC / GTIN
- 9316800255580
- Package dimensions
- 1" X 2" X 4"
- Package weight
- 0.15 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.
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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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