Light Duty Trolley 4-wheel

Works really well. The bearing roll very smooth.

Fits perfect into the strut, made a pull out for the pickup.

Great product to use for building a sliding bike rack using channel strut stock

Trolley fits my Unistrut channel perfectly. These roll smoothly and arrived in great shape. They have a 1/4-20 threaded hole in the center so you can easily mount things to them. I have camera equipment and microphone arms hanging from mine. I recommend these.

High quality product, fair price. Works well with the uni-strut for my application.

used on slab doors to make barn door style sliders worked great and has a cool look when hung on track from ceiling.

Fits in 1-5/8 strut channel perfect and slides smooth with load of a door.

awful. like others have noted, the trolley carriage is too tall so it hits the bolts that support the channel. ugghh....