I lift on the "pucks" all the time.
And speaking of pucks, I use 4 hockey pucks, one on each pad, gives a littler extra height and I never scratch paint or damage the bottoms of cars.
Yes I mean real hockey pucks.
QUOTE(mepstein @ Sep 9 2017, 10:58 PM)
I don't think any of the arms on our lifts are locking. Cars go up and down all day. With 500lbs + on each pad, how do they move?
You can move a car on a lift....stubborn nut, long breaker bar could spell disaster if not careful.