Have a GameCube controller with worn analog sticks?  You'll just need to unscrew your existing controller's casing and swap out these new replacement parts.INCLUDED:One (1) grey cap & one (1) yellow capQUALITY:Highest quality plastic & rubber!INSTALLATION:Installation of these caps requires the use of a Philips screwdriver (not included) and about 5-10 minutes of your time.COMPATIBILITY:These parts have been tested to work fine with both NTSC (American, Japanese, etc.) and PAL (European, Australian, etc.) genuine GameCube controllers including Wavebird model.NOTE:Controller is not included.  Tri-wing screwdriver needed to open controller is sold separately.