Polycarbonate Tubing, 1/2" ID x 5/8" OD x 1/16" Wall, Clear Color 24" L Transparent, rigid tubing for applications subject to high impact or repeated use Polycarbonate for resistance to grease, oil, detergent, and impact High elasticity for resistance to creep Operating temperature range of -275 to +250 degrees F Rockwell Hardness rating of R 73-78