Product Details Reviews Shipping & Returns Product Details Acer Aspire 7720g Replacement Laptop ke AC12 ALL KEYS IN STOCK 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 you press it. Reviews 1 Review Hide Reviews Show Reviews –> Thanks! 4 Posted by Rolf on 20th Feb 2015 Fits perfectly. Fast delivery