... hose 1'' Non-toxic PVC compound attaches easily Resists kinking offers smooth contours pvc clear hose 1''Multi-size available:1/4', 5/16', 3/8', 1 ... /2', 5/8', 3/4', 1', ...Product Features:Compounded from ... lines; water distillation lines and deionized water systems. pvc clear hose 1''