304 stainless steel inner silk tube cap/head/tube plug pipe fittings 1/8" 1/4" 3/8" 1/2" 3/4" 1" 1-1/4" 1-1/2" Female Thread

304 stainless steel inner silk tube cap/head/tube plug pipe fittings 1/8" 1/4" 3/8" 1/2" 3/4" 1" 1-1/4" 1-1/2" Female Thread

Aliexpress UK