Anyone know where I can buy some HV wire to extend the wire from

Anyone know where I can buy some HV wire to extend the wire from my LPS to the tube?

I would route a whole new piece. Mouser sells it under “Hookup Wire” but you might have to buy 50-100 feet. Amazon sells shorter lengths (~15 USD for 32.8Ft 22AWG 40KV) I can’t recall what the KV rating is - but I wouldn’t splice that.

I got mine at eBay. You can also use sparkplug wire.