DL Grow1 Black Vinyl Tubing I.D. 3/4'' x 50' - Food Grade Tubing For Hydroponics Black Vinyl Tubing - (ID) 3/4" - (OD) 1" - 50 ft Made from strong and durable vinyl material, these tubes are available in a variety of sizes and lengths, great for use with air or water. The tube walls are thick and flexible, and you may choose between the 100% opaque black vinyl, which prevents algae growth, or the clear vinyl that allow for complete visibility. Inner Dimensions: 3/4'' Outer Dimensions: 1''   Discreet Shipping and Purchase All purchases are private. All packages are shipped either USPS, UPS, or FEDEX with a discreet packaging. Most orders will be processed and shipped within 1 to 2 business days. Returns If you are not 100% satisfied with your purchase, you can return the product and get a full refund or exchange. Customer is responsible for return shipping. You can return a product 60 days from the initial purchase date. Any product you return must be in the same condition it was received and in the original packaging.