Then your car isn't low enough Ben
But seriously if you have the cash do yourself a favor and buy a decent trolley jack straight up...Supercheap ones will do the job but I dont like them...clunky and shit in general..Repco pro lift ones are better ,I got a lowline 2000kg one there for 99$ on sale and its been great, left out in the weather for 2 years and still going strong..or if you can get a Costco aluminum one for 180$ they are great, much lighter than the repco jack I have and will get under the lowest cars...Axle stands are cheap as cheaps on sale at supercheap they go for like 20$...get ones with an aframe style they are more stable....but really just as long as you put anything under your car to stop it fallin on your head, blocks of wood, spare wheels anything ..a decent jack will hold but it's better to be safe than squashed...