We guarantee these will fit any common bottle with 1″ gasket and holes 1″ below the mouth or you can return within two weeks. If you have the Italian or Chinese bottles from the dollar store save yourself some time these will not usually fit. Measure! If your ear holes are 1″ below the lip of the bottle they will fit.
Instructions: To put on bottle have curved bail lever on one side of neck and the swing cap on the other. Put one wire prong in one hole and slide the other prong along the glass towards the other hole until it clicks in. If there are square pads for the holes, try sliding down from the top. Note that there is a right way and a wrong way. The white cap should be free to swing over the mouth of the bottle and then be pulled down tight by the lever (bail). If it is not, either flip the curved lever to the other side of the bottle or reverse the wire in the ears so that it is on the other side of the bottle.