These are our large stainless steel buttons coated in Black Cerakote. They are fashioned from 303 stainless steel and engraved with our logo. These are designed for r188 bearings. They are CNC machined with an integrated threaded post.
The diameter is .93".
Click the "Contact Us" link at the bottom of the page to make a custom request or to get more information about this option.
These buttons are manufactured in the Pacific Northwest, USA.