uxcell 4 Pcs 6mm Y Union Tube Push in to Connect Pneumatic Fittings Product Name : One Touch Fitting;Inner Diameter (Blue End) : 6mm / 0.236" Overall Size(Approx) : 26 x 13 x 37mm / 1" x 0.5" x 1.5" (L*W*H);Material : Plastic Color : Blue & Black Weight : 38g Package Content : 4 x One Touch Fittings