Product Details Shipping & Returns Product Details Replacing a missing keyboard key, or replacing worn out keyboard keys are much cheaper than buying a new keyboard, and installation is literally just a snap. 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. Shipping & Returns