SKTREX 4 Wheel Silent Trolley Assembly Rollers Four Bearing Trolley Assembly for 1-5/8" Wide and All 1-5/8" or Taller unistrut Strut Channel with M10 Bolt and Lifting Eye Nuts

Works as expected. Very good finish.

Worked for my needs. I was able to move a water heater by myself with this trolly.

Looks like great quality and works fine for my intended purpose. My only issue was the bolt head is too high for my application. I mounted a unistrut railing in the top of my garage and the trolley was not able to move past the mounting screws. These screws were very low. The bolt, on the trolley, sits almost to the top of the unistrut. I was able to fix this by cutting the bolt head off on the trolley and welding the bolt to the trolley. Gave me just enough room to have the trolley roll down the track.

Worked great. I used them in a meat locker. Hook up an elk quarter and slide it back, hook up another a d slide it back. They worked great. Smooth rolling and strong!

Easy to use, good bearings. Value for money was great. Extremely durable and the materials size and fit were all accurate.

Worked great on my big sliding door

exactly what I was looking for, Thank you. Seems to be a quality product but time will tell. Going to use them for a trolley system in my deer cooler.

Used to trolly a porch gate, worked great

Bought this along with the rail and it works great....end up buying some 10mm threaded bike hooks for hanging the bikes and has no issues with load and slides very smoothly.