Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good ramps

I've used these for about 3 years. Picked them up at Autozone or wherever. Wide enough for our Sienna, good clearance, solidly built, fairly lightweight. They stay in place pretty good when pulling up on them, I've had them skid a time or 2 which seems normal. My only minor gripe is the little traction rubber piece in the front falls off. I need to glue or screw it on, no biggie.