Ronstan Series 40 Ball Bearing Block - Single - Universal Head [RF40100]
![Ronstan Series 40 Ball Bearing Block - Single - Universal Head [RF40100]](http://finandanchor.com/cdn/shop/files/55210XL.jpg?v=1704353298&width=1000)
⚓ The Secret to a Better Buy!
Picture this—you spot what looks like a killer deal on the horizon... But as you sail closer, hidden reefs appear: high shipping fees, slow processing times, and questionable products that don’t hold water. Before you know it, you’re caught in a rip current of regret.
That’s not how we do things at Fin & Anchor.
Here, you’re the captain, and we make sure your course is smooth sailing from checkout to delivery. No hidden fees. No knockoff gear. No waiting weeks for your order to arrive. Just top-quality products, backed by real warranties, with fast and free shipping.
🌊 Why Smart Boaters & Adventurers Choose Us:
✅ Authentic, Manufacturer-Backed Products – No shady third-party refurbs—just genuine gear backed by real manufacturer warranties. Buy with confidence.
✅ Based in Long Beach, California – Fast shipping from U.S. warehouses (not some mystery ship halfway across the world).
✅ Exclusive Free 2-Day Shipping – Orders $499+ qualify for fast, free 2-day delivery on most products. No gimmicks, just speed.
✅ Same-Day Shipping – Order by 12 PM PST, and we’ll get it out the door today so you can hit the water faster.
✅ Fast & Free U.S. Shipping – No hidden fees, no last-minute charges—what you see is what you pay.
✅ More Ways to Pay – Use Shop Pay Installments to split your purchase into easy payments, or checkout with Amazon Pay, Google Pay, and all major credit cards for a seamless shopping experience.
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✅ Dedicated Support from Real People Who Care – 💬 Chat with us! We may not be salty sea captains, but we’re passionate about helping you find the right gear. If we don’t have the answer, we’ll chase it down for you—no call centers, no canned responses, just real help when you need it.
👉 Bottom line? You deserve better than surprise fees, slow shipping, and questionable sellers. With Fin & Anchor, you get smooth sailing, start to finish.
Now that’s a smart buy. ⚓
🚚 Shipping & Returns
Shipping: Free U.S. standard shipping on all orders. Order before 12 PM PST, Monday–Friday for same-day shipping (excluding holidays). Expedited shipping options are available at checkout. View our full Shipping Policy.
Returns: 30-day easy returns. Refunds processed within 5-7 business days. View our full Return Policy.
![Ronstan Series 40 Ball Bearing Block - Single - Universal Head [RF40100]](http://finandanchor.com/cdn/shop/files/55210XL.jpg?v=1704353298&width=1000)
Ronstan Series 40 Ball Bearing Block - Single - Universal Head [RF40100]
Product Details & Specifications
Series 40 Ball Bearing Block - Single - Universal Head
Sheaves running on Acetal or Torlon® ball bearings provide high performance & low friction. The 2-stage ball bearing system provides consistent performance over the full load range.Captive Lock universal head can be fixed in either of two planes, or free to swivel as required.
Features:
- Low friction Acetal or Torlon® bearing system
- Lightweight
- Cheek cut-outs for easy bearing maintenance
- Captive Lock universal head
- Slotted pin shackle eliminates fouled lines
Applications:
- Mainsheet
- Halyard
- Vang
- Spinnaker control lines on off-the-beach catamarans, one design classes and sportsboats up to 8M(26')
Materials:
- U.V. Stabilized Acetal sheaves
- Acetal ball bearings
- Impact and U.V. resistant, fiber reinforced Nylon cheeks
- Grade 316 stainless steel load strap and head fitting
Specifications:
Sheave Ø: 40mm(1-9/16")
Max. Rope Ø: 10mm(7/16")
Pin Ø: 5mm(3/16")
M.W.L.: 350kg(770lbs)
B. L.: 1,000kg(2,200lbs)
Weight: 70g(2.5oz)