DGX Black Surgical Tubing - {3/8 in | 1 cm} {50 ft | 15 m} ROLL {3/8 in | 1 cm} Outer Diameter {1/8 in | 0.3 cm} Inner Diameter {1/8 in | 0.3 cm} Wall Thickness Natural Rubber {50 ft | 15 m} Total Length - Not Continuous