uxcell Industrial Piping Air Hose Multi Four Way Pass Base Pneumatic Fitting Product Name : Air Hose Quick Connect Coupling;Material : Metal Color : Silver Tone, Sky Blue;Hex Diameter : 6.5mm/ 0.26" Thread Diameter : 12mm/ 0.48";Hole Diameter : 13mm/ 0.51" Air Outlet External Diameter : 25mm / 0.98";Total Size : 12.6 x 5.4 x 2.5cm / 4.96" x 2.13" x 0.98" (L*W*T) Weight : 355g;Package Content : 1 x Air Hose Quick Connect Coupling