I have a few Sediver CT4R2M, 5-1/4 inch glass suspension insulator, ANSI class 52-9, rated at 10,000 pounds M&E. Glass shell is clear and is 5-1/4 inch across. These are new made by Sediver in Brazil. I am asking $6.00 each plus shipping. Or if your going to be in the San Antonio Texas area let me know if you want to stop by and pick up a few. Happy Collecting. Tom