5/16" I.D. x 7/16" O.D. Pure Silicone Tubing by the foot

Versatile size - just a little larger than the popular 1/4" x 3/8", good for pumps, small water lines, etc. Does not collapse easily despite thin wall size. Silicone stretches, this hose can fit over larger barbs. Advantages of silicone UV resistant; does not deteriorate outdoors Extremely flexible and stretchy Does not collapse when bent like PVC tubing  BPA and lead free; food safe, medical safe Extremely durable Insulates extreme heat and cold Works from -100°F to +500°F Specifications 5/16" inner diameter 7/16" outer diameter FDA Food & Medical Grade Silicone Translucent color; SHORE-A 60 hardness Platinum catalyst cured