Stainless Steel 5mm Deep U Groove Ball Bearings Pack of 2, Pulley Bearing Wheel Rail Ball Bearings Wheel

One of the bearings on our backyard zipline had froze up with rust over the years and this replaced it perfectly. Zipline is working great again. Just make sure the measurements match what you need.

high quality product

Good size but are u groove not v groove like advertised

Solid bearings. Being used on a neighborhood zip line outdoors. After 2 months they’re holding up great.

Used these on the mast of a sailboat. Perfect fit. It helped that the dimensions were clearly shown in a photo. Bearings rotate smoothly.