Product Name: retaining wall Product Description: durable, easy to install black and yellow, to increase visibility, improve security and effective protection of vehicles and buildings materials: rubber mounting position: Installation on skirting above (from the ground 20CM Department), Parking cylinder installation or corner on the sun angle: In the cylinder and the sun angle at the corner, with the expansion pipe fastening screws tightened Role: serve as a warning and protection Key Specifications / Special Features:? Material: synthetic rubber, with high brightness yellow reflective film, enhanced security, in low light, the effect is more pronounced.