This is the collet that fits on the outside of 001837 & 001838 Collects on SK300A Eimac tube socket. Size: 3.8" Inside Diameter Comes with the spring ring. Missing two teeth on the ring. Used MFR: Eimac SKU: 001839-P
This is the collet that fits on the outside of 001837 & 001838 Collects on SK300 Eimac tube socket. Size: 3.8" Inside Diameter New Old Stock MFR: Eimac SKU: 001839-EI
Middle Filament Collet for Eimac SK300 tube Socket used for 4CX5000A transmitting tube New Old Stock * No longer available for export MFR: Eimac SKU: 001838-EI Six Month Warranty