TC discontinued them years ago...had a fewof each caliber butsold off my .50 and .54cal Pre-Lubers as I neverused big caliber conicals.
I have a new spare .45cal like the one picturedstill in it'sTC blisterpac, $10 delivered within the 48 states).

Also, check EBay...seems like I've seen them there every now and then.