Plastic Ball Stock Nylon 6/6 Plastic Diameter 3/8 in Tensile Strength 13 000 psi Impact Strength 0.6 ft-lb/in Plastic Diameter Tolerance +/-0.002 in Plastic Hardness Rockwell M85 Off-White Weight 0.2 lb Grade Standard Friction Coefficient 0.25 Plastic Clarity Opaque 0.041 lb/cu in Tensile Strength Rating Excellent Water Absorption 1.28 Percent Standards UL 94 HB Minimum Temperature -20 Degrees F Maximum Temperature 210 Degrees F Package Quantity 100