Thanks to info from the FML gang, I ordered some tubing that was wider than the typical ferret tubing. This piece is about 12 feet long and has an almost 6 inch inside diameter. The tubing looks like a thick black spiral wire that is pressed in plastic. Any one able to tell me where I may have purchased this? I thought I filed the company and address, but I can't find it. Any help is appreciated as my ferrets love this tubing!!. Cathy Feed rescued animals in two clicks http://www.theanimalrescuesite.com/clickToGive/home.faces?siteId=3 [Posted in FML 7356]