Fender Am. series & Am. deluxe telecaster string ferrules

Fender Tele American Standard String Ferrules, Set of 6 Chrome plated steel.
The bottom portion of these ferrules fits to a 5/16″ (7.93mm) hole, the upper stepped portion fits to a 3/8″ (9.52mm) hole.
You can mount these flush to the back of the body 50s style.
Fender part number: 0994917000