I have a set of the plastic ones......made from recycled milk jugs I think..... They are STRONG !! But the problem I have with mine is getting up on em. They slide across the shop floor...... Yes, they have a rubber foot imbedded in the front bottom, but they still tend to slide.
So I put mine outside just on the entrance to the concrete so they have something t o butt up against, that way they don't slide around.
I like em, they come in handy.
Buy em, but use common sense with em like any other jack or stand, block the rear wheels. Work Safe !! "BH"
07-JKU-X /Poison spider Evap.Skid/Master craft grab handles/Or-Fab spare tire-can carrier/ Gibson SS Duals/ Q-tec Floor Liners/Hidden Hitch Receiver/ AntennaX 7inch/ 48" Hi-Lift./ 8"X16"X4"bs Steel smoothie wheels/ 265X75R-16,Kelly Safari TSR tarz.
Viet Nam Veteran 69-70, Troop "D" (AIR) 3/4 Cav. ,25th Inf. Div. CUCHI RVN. UH-1H Crew Chief of the "Pinball Wizard" 68-16224. Call Sign "CENTAUR".