Brake Fuel Line Tubing Straightener for 3/16″ to 1/2″ Diameter Tubing. Pipe size: Fits tube from 3/16″ to 1/2″. Straighten coils of tube quickly and easily. 5 contacting points provide higher straight precision. Can be vice mounted, Good for many types of tubing. Simply feed your coiled tube through one side and watch it come out straight on the other side. Any product you return must be in the same condition you received it and in the original packaging. Please keep the receipt. We usually respond within 24 hours on weekdays. Thank you for shopping at our store.