This 1/4" BSPP to NPT adapter is exactly what I was looking for. It is cleaner than the fitting in the description photos. The finish is bright and clean. It has clearly legible thread sizes etched into the surface. And, it comes with a plastic thread protector. Nicely done!Material: yellow brassSurface: machinedMarkings: "1/4G" and "1/4NPT(F)" etched into surfaceG thread washer: not includedLength overall: 0.32"Length of male thread end: 0.40"Length of female end: 0.31"Length of Hex: ~0.19"Length of internal threads: ~0.40"Outside diameter of female end: 0.67"Outside diameter of male thread end: 0.50"Inside diameter of female end: ~0.44 (tapered)Inside diameter of male end: 0.31"Inside diameter minimum: 0.31"Hex flat to flat: 0.67"Hex point to point: 0.76"Hex wrench: 11/16" (or 17mm)