uxcell M5 5mm Thread 6mm Tube Dia Pneumatic Quick Coupler Connectors 10pcs Product Name : Quick Coupler;Male Thread Diameter : 5mm(M5) Male Thread Length : 4mm/ 0.16";Fit Tube OD (Blue End Inner Dia) : 6mm/ 0.24" Overall Size : 21 x 14mm/ 0.8" x 0.6"(H*Max.D);Color : Brass Tone, Blue Material : Brass, Plastic;Net Weight : 20g Package Content : 10pcs x Quick Coupler