The SuperAir Jubilee Metal Quick Release Clamp Band is a handy plastic container having 30m strip inside with multi clamp, you may cut it to any size for fitting different size flflexible ducts. and Band is 9mm width, 0.6mm thickness width rounded edges and smooth underside of banding prevent any risk of damage of the duct of pipe being clamped. Also, Band material is Stainless (SS) steel AISI 430 Galvanized Steel.