Brand: Ronstan
Ronstan Series 40 Single Cheek All Purpose Block
Ronstan Series 40 Single Cheek All Purpose Block
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About this product
The Ronstan Series 40 Single Cheek All Purpose Block is a versatile rigging solution engineered for both cruising and racing applications. Featuring a self-lubricating Acetal polymer sheave that rides on a polished stainless steel race, this block handles both dynamic and high static loads with reliability.
- High performance: Designed for high working loads with minimal maintenance requirements.
- Durable construction: Features UV-stabilized Acetal sheaves, impact-resistant fiber-reinforced nylon cheeks, and Grade 316 stainless steel bearing races.
- Versatile mounting: Compatible with masts and booms using a curved surface adapter.
- Stackable design: Can be stacked to create a double block configuration or integrated with Ronstan Series 40 deck organizers (limit load on upper sheave to 60% of rated capacity when stacked).
Applications: Suitable for mainsheet, halyard, vang, and spinnaker control lines on boats up to 8m (26ft), including catamarans, one-design classes, and sportsboats. Manufacturer part number: RF41811.
- Secure checkout
- 21-day return requests
- Free standard shipping $100+
Product facts
- CT SKU
- CT-117303
- Model / MPN
- RF41811
- UPC / GTIN
- 9316800341795
- Package dimensions (H × W × L)
- 1" X 3" X 4"
- Package weight
- 0.13 lb
Shipping & returns
Shipping & returns
Request an eligible return within 21 calendar days after delivery. Every physical return requires written approval and an RMA number and must be shipped within five business days after the RMA is issued. The customer pays return shipping for an ordinary return. Tug & Tow provides prepaid return shipping for a verified damaged, defective, short, or incorrect shipment. We do not charge a restocking fee. See Shipping & Returns for eligibility, exclusions, and details.
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.
Need help choosing?
Need help choosing?
Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.
