Lightweight Grease (Oil) Nipples
2BA (3/16” BSF) thread. 1/4” AF x 3/8” total length
2BA & 3/16” differ very slightly, but with only 2 threads available, realistically they interchange
Plating varies a bit, mainly nickel & cad
Bit shop soiled after 90 years but still very useable
Lots more being listed.....