This is the correct vintage Bridge as used on the old Jazzmaster/jaguar guitars with a 9.5" radius.
This tuneomatic style bridge has height adjust screws that end in points- and the pointed ends of the screws sit in metal body mount cups that exactly center the bridge and provide friction-free rocking. This allows you to get that great vintage fluid tremolo feel and stay in tune.
This is a nicely chromed unit, and comes complete with bridge and both cups. The height adjustment screws take a 1.5mm hex wrench.