Technical data: Thread: G1/4" BSP; 4.5mm male thread lenght supported tube: 3/8" - 5/8" ID/OD (roughly equalls 10/16mm ID-OD) Outer diameter of a fitting: 22mm Installed height: 15.6mm Compatible tubing: PVC, EPDM, Norprene, silicone, most types of flexible tube ROHS Compliant! Made in Slovenia - Europe! PLEASE NOTE: - This fitting is to be used only with correctly sized tubing! - Do not use excessive force when attaching fitting barbs using Allen Key 8mm in order to prevent water block damage! - Do not use any tools to secure locking ring to the fitting barb. Brand EK Waterblocks Model # EK-ACF1016-WH Color No Fitting Type Compression Fitting Size 3/8" x 5/8" Fitting Angle Straight Fitting Finish Matte White