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Description
Ronstan RF55111 Series 55 Orbit Single Block with BecketRonstan RF55111 Orbit Block with becket. Designed for applications where weight is of paramount importance. The securing loop is easily changed and we suggest that you use either a forged eye or shackle to secure the block as pressed steel fittings can be sharp and will prematurely wear the rope mounting. General Range Information: Ultra Lightweight Low friction 2 stage Orbital ball bearing system Highest working load in its class Easily fitted and
Ronstan RF55111 Orbit Block with becket. Designed for applications where weight is of paramount importance. The securing loop is easily changed and we suggest that you use either a forged eye or shackle to secure the block as pressed steel fittings can be sharp and will prematurely wear the rope mounting.
General Range Information:
- Ultra Lightweight
- Low friction 2-stage Orbital ball bearing system
- Highest working load in its class
- Easily fitted and securely retained Dyneema Link head
- Low profile and compact
- High performance cleating
- Sheave Diameter 55mm
Technical:
- Sheave Diameter 55mm
- Maximum Rope Diameter 10mm
- Maximum Working Load 500kg
- Breaking Load 1000kg
- Weight 75g
Materials:
- Ball bearings - High compression strength carbon black Acetal
- Stage 2 bearing - Carbon fibre reinforced, PTFE impregnated Nylon
- Frame/Cheeks - Toughened, glass fibre reinforced Nylon
- Rope Link: UV stabilised, multi-strand impregmented SK75 Dyneema
Applications:
- Mainsheet systems on dinghies, sportsboats and small keelboats to 9m (30ft)
- Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)
- Halyard, Vang and Backstay application on boats to 8m (26ft)
- Control line applications on larger yachts
| We recommend using the RF613S shackle to securely attach the block to the existing deck eye on your boat. This helps the block maintain maximum freedom of movement and reduces the risk of wear on the Dyneema loop due to sharp edges on the deck eye, then use the 8072 Rubber Boot to keep the block upright and provide a neat finish. See related items. |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.9 ★★★★★
Based on 9 reviews
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Product Reviews
★★★★★ 5
Long lasting - great value - great product.
Our dogs are loving these Bullysticks! At first, I thought maybe the 12” size would be too big for my smaller pups, but to my surprise, they are perfect. We can get at least 4 entertainment sessions per treat, keeping the pups happy and busy for hours. Great value/great product. Thank you Bully & Bones!
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Reviewed in the United States on April 15, 2026
★★★★★ 1
Dangerous Pet Product
When my dog chewed the stick it became soft and when I pulled the last 1" from my dogs mouth the stick was now a long cartilage like long rope...It wasn't like a regular Bully Sick the the dog chews for awhile..This product is a danger for Dogs...Please don't purchase..Vetinary Visit for sure after this imitation Bully Stick
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Reviewed in the United States on December 17, 2025
★★★★★ 5
Bully Stick
If you’re considering bully sticks for your dog, I highly recommend giving them a try—especially if your pup enjoys long-lasting chews. My French Bulldog absolutely loves hers. She struggled a bit at first, but once she figured out how to hold it steady with her paws, she was happily occupied for hours. It’s been one of the few treats that truly keeps her engaged and satisfied.
One tip: choose the size carefully. I initially bought a 12-inch stick, which ended up being a little too big for a smaller dog. A 6-inch option is a better fit for small breeds.
Overall, bully and bones sticks have been a great find and a wonderful treat that brings my dog a lot of joy. I’d definitely recommend them to other dog owners looking for something safe, tasty, and long-lasting.
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Reviewed in the United States on December 7, 2025
★★★★★ 5
Delicious treat!
Our dog loves these treats. They entertain him for hours. Our trick is to saw them in half.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Perfect for my dog
My dog is delicate about the chews and treats that he will eat. I have tried several brands of bully sticks. What I like is the single ingredient and odor free benefits of these bully sticks. I refuse to buy anything processed for Max, my one year Collie. After our 6am morning walks, Max gets one of these. He goes ecstatic every time we get home knowing that these bully sticks are waiting for him.
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Reviewed in the United States on March 22, 2026