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