recycled rubber block is environmental, anti-ageing, easy to install & maintain, durable, widely use in artificial grass etc. 1) discription: recycled rubber block is environment friendly, widely applied as border fence for types of playgrounds, artificial grass, running-ways, stadiums, golf courts etc. 2)size: 500*70mm 3)thickness: 20mm, 25mm, 30mm 4)colors: red/green/yellow/blue /black etc.