Male brake pipe fittings. Size of the male fitting - 10mm x 1mm (short).
10x | 1/2" x 20 UNF for 1/4" Steel Male Brake Pipe Union Short Fittings Brakes
10pc Steel Male Brake Pipe Union Short Fittings 10mm x 1.25mm for 3/16" Brakes
10pc Steel Male Brake Pipe Union Short Fittings 1/2" x 20 UNF for 1/4" Brakes
Steel Male Brake Pipe Union Fittings 7/16" x 24 UNF for 3/16" Brake Pipe 10pc