Plastic Sheet Stock, UHMW Polyethylene, Oil-Filled, Plastic Length 4 ft, Plastic Width 4 in, Plastic Thickness 0.25 in, Gray, Plastic Clarity Opaque, Tensile Strength 4,000 psi, Impact Strength No Break, Friction Coefficient 0.14, Water Absorption 0.01 Percent, Plastic Density 0.034 lb/cu in, Corrosion and Chemical Resistance Good