Ok it's really quite quick about 20 min tops . The stands are two stage about 200mm each , so with the stand on low , jack the car using the car jacking point , [ say the front right ] so the stand can go under the front right wheel . lower the car onto it and then jack the front left side and do the same . If you want the car up level then do the rear wheels as well . the car is now 200mm higher , which may be enough for some servicing .For the next stage put the jack in as the last photo , then jack up the car and stand and slide in the pins , do all four wheels . If you want to take off a wheel say to work on the brakes , I place a jack stand under the car jack point next to that wheel and then lower the wheel jack stand and remove it .I made these stands because I cant drill my floor for a car hoist to be bolted down , the floor is hot water heated and has pipes all through it , drilling is bound to hit one .