Hi FlameHi Flame 4 Wheel Light Duty Trolley Assembly Roller Trolley Easy Bolt Installation for use with 1-5/8" Wide and All 1-5/8" or Taller Strut Channel (4)

The media could not be loaded. I am a builder and I bought these in order for me to keep the lift on tracks that I recessed into the wall. They are not under any load and only meant for keeping the cart from moving left to right as it goes up and down. Very well built and a high quality all metal product that performs above my expectation. It will buy again.

For less than one Unistrut brand trolley P2750 I got 4 of these. Unistrut rates theirs to only 100 lbs so this listing may be slightly exaggerated, but I did hang a 108 lb lathe tailstock from one of these and it moved smoothly (as can be expected in strut). The Unistrut brand have roll pins to hold the wheels on but these have solid metal pins so that may impact load.

My project required installation where the bolts and nuts were through a piece of wood to use with a stationary strut and I needed to install the nuts on the wheel side. See pic indicated #1 trolley wheel. I ended up having to use a magnet to hold the nut in place while turning the nut. But the wheels work great in the strut. There are wheels out there where the holes are on extended indicated #2 in pic mounts but were not available this time around.

Good quality an work as they should.

Works great

Bolt holes excepted Bolt easily. Good quality. My tracks needed to adjusted using a vice to insure longer life of this roller.

I made a sliding bike hanger in my garage using U beams and these rollers. They worked just as I had hoped bolting right up to bike hangers I purchased. You cannot actually see the rollers in the picture but they are running along the railing that is attached to the ceiling of my garage.

I had to squeeze wheels together, backing for bearings was not attached well on some wheels.