Paper laminated with a phenolic resin. XX has moderate strength and good Electrically Insulating properties. This Product is Manufactured in China. Diameter: 1/4"; Diameter Tolerance: (-0.001" - +0.001"); Length: 1 ft.; Length Tolerance: Oversized. Color: Brown; Tensile Strength: 15,000 psi; Tensile Strength Rating: Excellent; Impact Strength: 0.6 ft. - lbs./in.; Impact Strength Rating: Poor. Coefficient of Friction: Not Rated; Friction Rating: Not Rated; Water Absorption: 0.0125; Water Absorption Rating: Poor; Hardness: Rockwell M110. Density: 0.049 lbs / cu. in.; Temperature Range: 250° F; Specifications Met: UL 94 HB.