Product Details Reviews Shipping & Returns Product Details WHAT COMES WITH EACH KEY ORDER The Key Cap This is the piece of plastic that has the letter on it. The Retainer Clip The plastic or metal sisscor clip pieces that hold the key cap to the base of the keyboard. The Rubber Cup This is the piece of rubber or plastic that acts as the spring to rebound the key after your press it. Please identify your KEY TYPE , every keyboard is different, so please make sure to identify the key type that best matches your keyboard. If you need more info please visit the how to order section. HC12 HC29 HC37 HC38 Reviews 2 Reviews Hide Reviews Show Reviews –> Old HP 6730b I Key 5 Posted by Unknown on 18th Sep 2018 Key worked great. Since it was the first time doing this it took us two tries to get it installed. It works great!!