This is3/8" UNF and is suitable for3/16" Brake Pipe. QualityUK sourced part.
3/8" UNF Female to 7/16" UNF Male Brass Hydraulic clutch or brake pipe adapter
7/16" UNF Male to 3/8" UNF Female Brass Hydraulic clutch or brake pipe adaptor
7/16" UNF Male to 3/8" UNF Female Brass Hydraulic clutch or brake pipe adapter
AB Tools Steel Male Brake Pipe Union Fittings 7/16" x 20 UNF for 1/4" Brake Pipe 10pc
AB Tools Steel Male Brake Pipe Union Fittings 1/2" x 20 UNF for 5/16” Brake Pipe 10pc
Steel Female Brake Pipe Union Fittings 3/8" x 24 UNF for 3/16" Brake Pipe 10pc