A few nice 3D Printer images I found:
Mini Microswitch – SPDT (Lever, 2-pack)
Image by SparkFunElectronics
This is a 3-terminal microswitch two pack, each equipped with a 17mm lever actuator. These switches have a great ‘clicky’ sound to them with a nice tactile feel and are perfect when used for a slider, 3D printer, or robot project. Each microswitch is rated for 5A at 250VAC.