Features: 100% Brand New and High Quality Purpose: Classic, Universal, Applicable to the full range of IBM Lenovo thinkpad laptop (new Ultrabook Ultrathin laptop carefully buy, might touch the screen when you close it, such as new models of Thinkpad keyboard after the end of 2013 : X1 CARBON, T440, T440p, T440s, T540, T540p, W540, X240, X240t, X240s). Size: Upside Dia: 9mm Under Dia:7mm Height: 5mm Material: Rubber Color: Red Quantity:10 Pcs Net Weight: 3g Package Includes: 10 x Mouse Pointers