Features: 100% Brand New and High Quality Purpose: Classic, Universal, Applicable to the full range of for IBM compatible with Lenovo thinkpad laptop (new Ultrabook Ultrathin laptop carefully buy, might touch the screen when you close it, such as new models of for 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 specification: Concave, Convex Package includes: (Without retail package) 10 x TrackPoint Mouse Caps for compatible with Lenovo IBM Thinkpad 100% Brand New and High Quality Purpose: Classic, Universal, Applicable to the full range of for IBM compatible with Lenovo thinkpad laptop (new Ultrabook Ultrathin laptop carefully buy, might touch the screen when you close it, such as new models of for 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 specification: Concave, Convex