Drift is a simple and general tool designed to measure inside size of casing, tubing, drill pipe and other pipes. Our Services: 1.High quality products with favorable price at right delivery. 2.Customized products. 3.Warranty. 4. When enquiry, please kindly advise below: Size: drift size & casing (tubing) spec if necessary Material: metal/ nylon or something else Quantity Port of destination if you need CNF or CIF price Your ideal delivery date if you need the goods urgently -