Allstar Clamp-On Mount Kit for Allstar 1/2 inch Tubing Window Net Installation Kit is designed for use with the Allstar 10219 window net installation kit. It is designed to mount on a 1-1/2 inch round tubing. The clamp-on window net installation kits eliminate welding tabs to the chassis. The clamps have 600 inch holes designed to install a window net installation kit to a chassis tubing..