Trigger button only for ART38 Dent Puller handle, this listing is for the, this is a button only and works with both the 110V & 220V dent pullers. ART49-15Works killer tools dent puller ART38-110V Works killer tools dent puller ART38-220V Button only for Killer tools Welding handle for 110V & 220V systems Item is plug and Play see photos