Features: With large elasticity , small distortion ,strong stretching force , it has good shock absorption effect. Widely used in the metal processing stamping industry Has good performance of resistance to high-energy rays Oil resistance: polyurethane is a highly active mineral oil with a low affinity and is virtually impervious to erosion in fuel and mechanical oils Wear resistance: its Wear resistance is generally is about 3-5 times of rubber within the range of 0.01-0.10cm3/1.61km Wide hardness range: it still has the elongation and resilience of rubber under high strength Specification: Dia:60/100/150mm(Optional) Thickness:30mm/1.2in Weight: 97 -612 g / 3.4-21.6 oz(approx.) Package list: 1 x Polyurethane Crash Pad