K7400 Tube Stock PVC Type 1 Grade Standard Plastic Length Tolerance Oversized/-1.000 in Outside Diameter 3/4 in Inside Diameter 1/4 in Gray Plastic Clarity Opaque Shape Round Tubes Impact Strength 1.0 ft-lb/in Friction Coefficient 0.6 Water Absorption 0.2 Percent Plastic Density 0.051 lb/cu in Plastic Hardness Rockwell R115