Remove dust of bottom case hole, keep it dry; Heat the hole part w/ hair dryer, then stick the pad on it when it is hot; When it is cool down, reverse it, heat the column part and press it with hand quickly.

Compatible models
A1278 13"
for MacBook 13" Core 2 Duo" 2.0 13" (Unibody)/ 2.4 13" (Unibody)/ 2.26 13" (SD/FW) (2009)/2.53 13" (SD/FW) (2009)/ 2.4 13" Mid-2010/2.66 13" Mid-2010/ 2.3 13" Early 2011/2.4 13" Late 2011/2.7 13" Early 2011/2.8 13" Late 2011/2.5 13" Mid-2012/2.9 13" Mid-2012

A1286 15"
for MacBook Pro 15" Core 2 Duo" 2.4 15" (2008)/2.53 15" (2008)/2.8 15" (2009)/2.53 15" (SD)(2009)/2.66 15" (2009)/2.66 15" (SD)(2009)/2.8 15" (SD)(2009)/ 2.93 15" (2009)/3.06 15" (SD)(2009)

A1297 17"
for MacBook Pro 17" Core 2 Duo" 2.66 17" (2009)/2.8 17" Mid-2009/2.93 17" (2009)/ 3.06 17" Mid-2009/ 2.53 17" Mid-2010/2.66 17" Mid-2010/2.8 17" Mid-2010
for MacBook Pro 17" Core i7" 2.2 17" Early 2011/2.3 17" Early 2011/2.4 17" Late 2011/2.5 17" Late 2011

Compatible No:
MB466LL/A, MB467LL/A, MB467LL/A, MB991LL/A, MC374LL/A, MC375LL/A,MC700LL/A, MD313LL/A, MC724LL/A, MD314LL/A, MD101LL/A, MD102LL/A,MB470LL/A, MB471LL/A, MC118LL/A, MC026LL/A, MB985LL/A, MB986LL/A,MC371LL/A, MC372LL/A, MC373LL/A, MC721LL/A, MC723LL/A, MD318LL/A,MD322LL/A, MD103LL/A, MD104LL/A, MB604LL/A, MC226LL/A*,MC024LL/A, MC725LL/A, MD311LL/A

Package Includes:
4x Feet Pads