Jima said it. Don't buy cheap stuff when your life may depend on it. I use these for my lifted 4Runner and my Fiances car. Never had a problem and they are plenty tall enough.
Clicky 
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1995 4Runner Limited Edition 4x4.
95 Runner. Pro Comp 4" Lift... That's it for now. SOLD 2005
92 Toyota Truck. Sold 2005
TX4Roc.com