Nitrous Tube Bending Tool, Used with 1/8" or 3/16" Tubing - This special tube bending tool is designed for tight radius bends and will greatly simplify tube bending with very professional looking results. Excellent for use on any direct port type NOS kit, such as the Sportsman Fogger or the Pro-Shot Fogger systems. Designed for use with 1/8" or 3/16" tubing. Nitrous Tube Bending Tool, Used with 1/8" or 3/16" Tubing