Why keep using heavy, difficult-to-install concrete parking blocks? Preserve order in your parking lot with Park-It® Parking Stops from SA-SO. Our parking lot stops are safer, more durable, ensure greater visibility, and keep pedestrians safe. The Park-It® parking curb is constructed of 100% recycled rubber and comes with pre-molded holes. They’re lightweight, flexible and conform to the contour of uneven road surfaces. SA-SO Park-It® rubber parking blocks are impervious to weather, easy to install, and maintenance free.