Fog machine 1 1/4 hose adapter with thumbscrews

A hose adapter with a collar that tightens around a 76.2 mm nozzle using four thumbscrews, and a spigot that inserts into a 34 mm hose. The adapter features an open passage through the middle with a conical neck connecting the nozzle end to the hose end, and includes barbed ridges on the spigot for grip. Adjustable: nozzle diameter, collar wall thickness and depth, hose spigot length, passage diameter, thumbscrew dimensions (shaft diameter, head size, clamp depth), and optional ventilation holes around the collar.