K7374 Tube Stock ABS Grade Standard Plastic Length Tolerance Oversized/-1.000 in Outside Diameter 1/2 in Inside Diameter 1/4 in Black Plastic Clarity Opaque Shape Round Tubes Impact Strength 5.6 ft-lb/in Friction Coefficient 0.5 Water Absorption 0.4 Percent Plastic Density 0.038 lb/cu in Plastic Hardness Rockwell R105