Amazon.com: Ramptech Quarterpipe Ramp (2' Tall x 4' Wide) - Weatherproof, Heavy-Duty Indoor and Outdoor DIY Skateboard Ramp Kit - Portable Skateboarding Ramps with Caster Wheels and High Friction ABS Surfacing :
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$150 OBO Skate Ramp Quarter Pipe for Sale in Portland, OR - OfferUp
Amazon.com: OC Ramps Quarter Pipe (2' Tall x 3' Wide) - Durable Wood Skateboard Ramp Kit - Store Easily in the Garage - Great for Home or Professional Use and also Works