Normal foam lances only connect to pressure washers, they are shaped to fit the nozzle so you cant put a hose on them, then there are some lances that you can use with a regular hose but you have to search for them stuff like CG foam cannon and then there are some with dont require both and are hand pumped, infact i wont even call them a lance they are just pressure srpayers and do not produce any proper foam, very commonly available.