Skate Stoppers protect your concrete walls and planters from the damage skateboarders can do. These Stoppers are specially designed for concrete surfaces. Manufactured from 6061-T6 Aluminum, these Skate Stoppers are hard tumbled to remove all machined and/or cut edges. Suggested to be used 18” from end of planters/walls and approximately 36” centers.  Do not apply at grout joints. Overall outside dimensions are 2" wide, 4" deep, and 2-3/8" tall.