


Adjustable Trolley with Safety Plates, 10000 lbs. (5 tons) Capacity, 4-14/16" - 6-7/8"
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
Adjustable Trolley with Safety Plates, 10000 lbs. (5 tons) Capacity, 4-14/16" - 6-7/8"Easily adjusts to fit various flanges, I beams and H beams Use on straight or curved track Can be installed or removed at any position on the beam Heavy duty cast iron wheels Deep width flange provides superior contact with the beam Safety plate included Geared trolleys include two geared wheels operated by hand chain Meets ANSI B30. 11 Capacity: 10000 lbs. (5 tons) I Beam Flange Width: 4 14 16" 6 7 8" Manufacturer's Warranty: 1 Year Limited Net
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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Product Reviews
★★★★★ 5
Best leash we’ve owned in 36 years of dog parenting
Color: Green, Size: Large
Wow! My wife and I have been dog parents for 36 years (six dogs), and this is the best leash we’ve used.
* Two handles: I used to think the second handle was unnecessary—now I can’t go back.
* Comfort: Both handles are padded, so no hand strain on long walks or sudden pulls.
* Tangle-resistant: The swivel between the leash and the loop that goes over the dog’s nose/neck keeps things from twisting, which makes control easier.
* Secure fit: The sizing ring stays put, so it won’t pinch the dog’s nose.
Note: There’s no backup clip to attach to a collar, so a determined dog could slip it if the loop is too loose. Adjusting the ring snugly has worked well for us.
Given the quality and price, I can’t recommend this leash more highly. ★★★★★
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Reviewed in the United States on October 22, 2025
★★★★★ 5
Slip lead that doesn't tangled and allows for a greater control
Color: Blue, Size: Large
I'm using this slip lead to volunteer at a dhelter - and what a difference it made! I really like this slip lead leash! Very easy to put it on a pup one-handed, the swivel and second handle make a huge difference! (The main shortcoming of a simpler version of a similar slip lead without a swivel is that it's getting tangled and/or twisted around). This is also high quality item - every detail is thlught through! Very comfortable to use, multiple color options - really nothing negative to complain about! Love this leash!
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Reviewed in the United States on January 30, 2026
★★★★★ 5
Great slip lead
Color: Blue, Size: Large
Love the double handle for walks
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Reviewed in the United States on April 6, 2026
★★★★★ 4
Second handle too high up on leash
Color: Black, Size: Large
Slip lead length provides your reactive dog with too much range to lunge. The second handle is great but it is too high up on the leash. If the slip lead length was shorter and the second handle was lower, this product would be awesome.
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Reviewed in the United States on December 3, 2025
★★★★★ 5
Great lead alternative!
Color: Blue, Size: Large
This works great for an alternative to just a slip lead. I work in a kennel and it makes it a lot easier to grip for the dogs that pull a lot.
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Reviewed in the United States on January 28, 2026