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Description
Ronstan Orbit Series 55 Single Swivel Head Block w/ CleatProduct Description Ronstan Orbit Series 55 Single Swivel Head Block w Cleat Features Automatic and Manual ratchet in one block Up to 20: 1 holding power Smooth easing of sheets High performance cleating Sheave 2 5 32" + 1 3 8" (55 + 35 mm) Max. Rope 3 8" (10 mm) Max. Cable in. (mm) Pin in. (mm) M. W. L. 1100 lb. (500 kg) B. L. 2200 lb. (1000 kg) Weight 7. 2 oz (204 g) Product Information Automatic ratchet block Now you can enjoy the flexibility of
Product Description
Ronstan Orbit Series 55 Single Swivel Head Block w/ Cleat
Features
Automatic and Manual ratchet in one block
Up to 20:1 holding power
Smooth easing of sheets
High performance cleating
Sheave Ø - 2 5/32" + 1 3/8" (55 + 35 mm)
Max. Rope Ø - 3/8" (10 mm)
Max. Cable Ø - in. (mm)
Pin Ø - in. (mm)
M.W.L. - 1100 lb. (500 kg)
B. L. - 2200 lb. (1000 kg)
Weight - 7.2 oz (204 g)
Product Information
Automatic ratchet block
Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes*. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.
Selected Series 55 models.
Awesome ratchet block holding power
Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
Materials
Sheave: Hard anodized Aluminum
Ball Bearings: High compression strength carbon black Acetal
Frame/Cheeks: Toughened, glass fibre reinforced Nylon
Rope Link: UV stabilised, multi-strand impregnated SK75 Dyneema®
Features
Sheave Ø - 2 5/32" + 1 3/8" (55 + 35 mm)
Max. Rope Ø - 3/8" (10 mm)
Max. Cable Ø - in. (mm)
Pin Ø - in. (mm)
M.W.L. - 1100 lb. (500 kg)
B. L. - 2200 lb. (1000 kg)
Weight - 7.2 oz (204 g)
Product Information
Automatic ratchet block
Now you can enjoy the flexibility of setting up your ratchet blocks to suit yourself. Ronstan is the only company that offers a ratchet block with both auto and manual engagement modes*. In the auto mode of the ratchet mechanism engages when load is applied, but switches off when it's released. This lets the sheet run out smoothly and freely-great for rapid easing of the sheet and for gybing asymmetric spinnakers. In manual mode, the ratchet mechanism can be switched on or off as required. This is the preferred mainsheet set-up for may top sailors. Try the block in both modes and see which you prefer - you really can't go wrong.
Awesome ratchet block holding power
Quite simply, Ronstan Ratchet Orbit Blocks™ have the highest holding power available. The sophisticated NC-machined sheave features Generation 2 of our patented sheave cross-hole geometry. Its holding power is up to 21:1, almost double that of our nearest competitior. The unique sheave design has 12 gripping faces which directly resist loaded line movement. Traditional designes have only 8 faces with an angled resistance to line movement. Our Generation 2 design has straight resistance faces which both distribute the load and minimise rope wear. These faces are offset from the radial line, to draw the rope down into the gripping area when under load.
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
4.2 ★★★★★
Based on 8 reviews
Sort
Product Reviews
★★★★★ 5
All squeaker ball companies need to start doing this!!!!
Color: Orange - Pink, Size: 2.5"(Medium)-4 Pack
So first thing I want to say is that the manufacturer of these balls has thought of something that I am honestly shocked nobody has yet thought to do. They put the squeaker reed UNDER the fuzzy shell. GENIUS! I mean really, why aren't all squeaker ball companies doing this?!?! No wondering when it will finally pop out (or in) and it definitely prolongs the life of the squeaker significantly. My staffordshire/pit bull mix adores her squeakers, that said, they never last long especially when they are in a ball (her absolute fav toy on earth) The squeaker being protected alone warrants a 5 star review because it is simply genius.
The fuzzy shell has yet to deteriorate and we have had these balls now almost 3 months so they have already outlasted other brands too. Now as for the sound itself, it is definitely different from a typical squeaker, not necessarily a bad thing. It is a "mild" squeak, not obnoxious a bit high pitched. Sounds more like a baby toy squeaker than a dog toy squeaker though....I'm not quite sure how I feel about the squeak. My dog has a preference for squeaker sounds. She prefers the little squeaker sound over the deeper louder sound from the bigger squeakers, these are closer to the sound she prefers but she doesn't LOVE it like I had hoped.
The only other thing is that the ball itself feels as though it was blown up and plugged tight. Meaning (and believe me when I tell you my dog has a strong jaw) it is harder than most to make these balls squeak because you can't squeeze all the way down on the ball. It takes me two hands to make them squeak so my dog has a tough time squeaking them. She continually tries though so they are keeping her occupied. Overall I do recommend these balls because they are far safer than most eliminating the concern for your dog accidentally eating the squeaker and the longevity of their potential life. Try em, they are rugged enough for heavy chewers alike!
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Reviewed in the United States on September 27, 2025
★★★★★ 4
Tough enough to take rough play.
Color: Multicolor A, Size: 2.0"(Small)-6 Pack
They are smaller than I thought. That’s on me because I didn’t see the size. My dog loves them anyway and they are sturdy
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Reviewed in the United States on April 4, 2026
★★★★★ 5
Lucy The Dog Approved!
It's really not for me to say, with exception of the orange-blue color, which is ideal for still life. But the best part is how unglued the Lucy Dog gets at the sound of the squeaky toy knowing the hall leading to my apartment is instantly converted into a Dog Run. And she gets equally excited at the sight of any grassy area when on bike rides. So a feature that is truly the dog's bollocks is it's the perfect size for both Lucy's petite mouth and the all important emergency spare that fits securely under my bike saddle. In short, sublime perfection in Lucy The Dog's expert opinion.
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Reviewed in the United States on July 17, 2025
★★★★★ 5
Great fetch toy
Color: Multicolor B, Size: 2.5"(Medium)-6 Pack
My German Shepherd LOVES these. The size, squeak, & quality is the Perfect fetch ball. I use a blue ball throwing launcher and they work Great together. Will be buying more of these
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Reviewed in the United States on May 31, 2026
★★★★★ 5
If you have dogs that like to play fetch, these are a must have!
Color: Orange - Pink, Size: 2.0"(Small)-4 Pack
My pups love these sp much, they won't play with any balls other than these. Not sure if it's the small size, or the fact that they squeek, but they def were a hit.
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Reviewed in the United States on May 12, 2026
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