[Spridgets] Pre-soldered spade connectors

[Gmari2]

Greetings group,
I have been searching for a product that NAPA stores used to carry.
Pre-soldered spade and other types of connectors.  They had a drop of solder
built into them with the wire plastic sleeve shrinking when  a heat source was
applied.  They sere outstanding!  The solder would melt and the plastic sleeve
would tightly wrap the wire.  I can't find them in a store nor on the net.
Can anyone help?
Regards,
George