Polycarbonate Tubing, 1/4" ID x 3/8" OD x 1/16" Wall, Clear Color 36" 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