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