Material: made of nickel plated brass Threads: G1/4" BSP; 4,5mm male thread lenght G1/4" BSP, 6mm female thread lenght Outer diameter of a knurled part: 19,8mm Installed height: 28mm Sealed with high quality NBR oring. ROHS compliant! Please note: - All AF Angled adapters are hand polished and rounded therefore minor geometrical imperfections are to be expected. This fact does not fall under warranty terms and RMA rights!