Easily slide the visco into the clip, then insert the shroud on the other side. Accepts all standard shroud and visco types. Igniter not included. See the video for full instructions, most importantly, do not insert the visco too far. Stop rigth before the guide hole. If you are just ordering these clips, enter code Visco1 during checkout so it regulates the shipping costs. If you use this code and order more than visco, your order will be cancelled.