I love this hydraulic jack and air compressor combo. If you have a flat tire, it's much easier to replace. It simply connects to your car battery to power it up, it comes with alligator clips for connecting directly to the battery, or you can use a lighter extension cord. It looks sturdy, is strong and comes in a sturdy case to keep everything together. The case has a reflective triangle that allows you to signal people coming from behind to block the road. Cool thing