This Sets includes following products: Micro4 motor*1 Micro3 E1000 Slider Set*1 Carring case*3 Note: the slider on this page is Micro3 version, not Micro4. the Micro3 slider body is almost the same as Micro4 (heavy 1.16 lbs than Micro4), so you can use Micro4 motor on the Micro3 slider. Now, with the same price of Micro4 E1000 you get an extra Micro3 Motor!