Made of natural latex rubber, { 3/16 in | 0.5 cm } (small) surgical tubing has an inside diameter of { 1/8 in | 0.3 cm }, and wall thickness is { 1/32 in | 0.08 cm }. Small is most often used as hold downs for smaller items such inflator hoses and regulator necklaces. Surgical tubing is also available in a { 50 ft | 15 m } ROLL at a substantial savings.