T-shape barbed pipe fitting is a coupling for joining 3 diameter sizes pipes in different direction Barb OD: 8x8x7mm / 5/16x5/16x1/4 inch; Brass Tee Fitting Overall Size: 49x30x10mm / 1.93x1.18x0.4 inch (L*W*H); 304 Stainless Steel Clamp ID: 6-12mm / 0.24-0.47 inch Brass material features corrosion resistance, high strength, high hardness, high strength at low temperature This 3-way fitting and hose clamps set can be used with polyethylene, nylon and PU tubing, connect pipes as air, water, fuel, oil and gases in a quick and simple way Please confirm the correct size before ordering