uxcell 5 Pcs 5mm Male Thread 4mm Push In Joint Pneumatic Connector Quick Fitting Item Name : Quick Fitting;Model : APC4-M5 Material : Metal, Plastic;Color : Silver Tone, Black Thread Size : 5mm;Inner Diameter(Black End) : 4mm Total Size(Each) : 11 x 20mm/ 0.4" x 0.8" (Max.Dia*H);Net Weight : 25g Package Content : 5 x Quick Fitting