1/4" 3/8" 1/2"- 1-1/2" BSPP M10-48 Metric Male 304 316 Stainless Steel Oil Level Sight Glass Window Hex Air Compressor Gearbox

1/4" 3/8" 1/2"- 1-1/2" BSPP M10-48 Metric Male 304 316 Stainless Steel Oil Level Sight Glass Window Hex Air Compressor Gearbox

Aliexpress UK