The store will not work correctly when cookies are disabled.
We use cookies and tracking technologies to improve your experience and analyze site usage. Some information may be shared with third parties for analytics and advertising. You can accept all cookies or decline non-essential tracking. To find out more about the cookies we use, see our Privacy policy.
Cast iron, zinc-plated support ring with attached boss head clamp and thumbscrew. Ring diameter is 5" and distance from support to center of ring is 4.5".
