Latex Bulk Tubing, 100′, Purple, Special Heavy. Easy Dispensing Box. Inside diameter = 7.6mm Outside diameter = 10.8mm. For Exercise and Therapy”” Sold Individually Bulk Natural Latex Tubing. 1each Please note: If there is a color/size/type option, the option closest to the image will be shipped (Or you may receive a random color/size/type).