Hose clamp from Logosol. These clamps are designed to be used with flexible vacuum chip hose. Simply slide the clamp over the hose and tighten with a screwdriver. The clamp will constrict around the vacuum hose and outlet hole. Fits 5" (125mm) diameter chip hose and adjusts from approximately 4-1/4" to 5-1/2" (104mm-138mm).