Big Horn 11291 2-1/2 inch x 50 Feet Clear Flex Hose. This hose is made of clear PVC with a helix of heavy gauge wire. Ideally suited for connecting to your dust collection system. This very flexible hose will make a 90 degree turn with only a 6" radius. Unlike other hoses made completely of plastic, the wire frame of the hose can be grounded for dissipation of static charge.