The core and tubing is a combo part which is used to mount the Lloyds Mushroom inserts and to connect the earplugs to a BTE hearing aid.

The tubing will attach to any Behind The Ear haring aid by simply slipping about 1/4 inch of the tubing over the end of the curved elbow/earhook of the hearing aid. To keep the short straight tubing in place all elbows have a flaged ridge that will grab hold of the tubing. The core is a small right angle piece of plastic that attaches the tubing and the mushroom inserts. All 5 sizes of our Mushroom Inserts are designed to mount onto the Core.