Alright mechanics and DIY folks, these Hillman bronze flange bearings are the real deal for when you need reliable shaft support. This 4-pack gives you plenty to work with on various projects. The dimensions are 12x15x12mm metric size, perfect for plenty of industrial and machinery applications. The flange design includes a wide inner ring with two set screws that make attaching to your shaft super secure - no more worrying about things slipping or moving around. The housing is cast iron, which we all know is built to last, and there's even a grease zer0 fitting so you can re-lube the bearing when needed. What's really cool is how these are designed to prevent shaft marring or burring - they're gentle on your equipment while being tough enough for the job. They also center the shaft in the bore properly, which means less vibration and smoother operation overall. Made right here in the United States, so you know you're getting quality manufacturing. The package is pretty compact at 2.5x1.2x1.6 inches, so they're easy to store until you need them. Whether you're working on machinery, automotive projects, or industrial equipment, these flange bearings provide that reliable performance you count on from Hillman products. They're one of those components that might seem small but make a huge difference in how your equipment runs.