The FlyStuff Flowbed CO2 apparatus is made of 1/8in. UHMW porous polyethelene fused to 3/4in. acrylic base. A precision routed maze assures optimal, consistent diffusion of CO2 throughout the staging area. The FlyStuff Flypad features a nickel-plated brass threaded hose barb input that fits 1/8″ I.D. (3mm) tubing (substitute fitting for 1/4″ (6mm) I.D. tubing available upon request). We also provide Flypad resurfacing in our in-house machine shop.