Standard 1/8 BSPP size for color ball or for PCP air . Can be used between micro-type bore hose and SCUBA cylinder charging fitting. Socket fitting supplied with 1/8 BSPP male thread with cone for connection to a micro-type bore filling hose. Available with the UK industry standard 1/8 inch male thread that fits most of the pump and cylinder fill lines. Safe for use on all pre- equipment with a maximum working pressure of 340BAR, 5000psi. Do not exceed maximum working pressure. size:18*47mm Material:metal colour:Silver + yellow Package Contents: 1 * Inflatable joint Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.