Tube Extenders Where to find?

They are called Socket Savers. You can find 8 pin or 9 pin  on EBAY or AMAZON!!

https://www.amazon.com/AmplifiedParts-8-Pin-Socket-Testers-Plastic/dp/B005IYPLH0

Perfect, Thank  you

  Asked and answered. FWIT they are also available from the larger stores that sell tubes , Tube Depot and The Tube Store ect. I have tubes but have never used them , wished I had on my little Had Inspire as the 4 sockets are pretty loose. I talked to Dennis about replacing them when he had my amp for a repair. He said that I might as well build a new amp. My contribution to your question is that while researching them I read a couple comments from people that installed them and had great difficulty when they needed to extract them. Again I have zero experience, maybe someone could chime in on that. Also I have 3 Schiit DAC’s and a Loki, they are a great value.  Cheers , Mike B. 

@buellrider97

I use them. Both the 8 pin and 9 pin. I’ve never had any problem removing them. BTW, why would you want to remove them? The reason for using them is when you change tubes frequently to save the sockets from wear and tear!