Meccanixity Pneumatic Tubing Pipe, 4Mmx2.5Mm 525Ft 160 Meters Pu Air Line Tubing Product Details The pneumatic tubing pipe is made of PU materials, with high elasticity and flexibility. Suitable for air, water, lubricants, instrument lines, irrigation control systems, textile mills, ship fuel delivery pipes, vacuum systems, air conditioning systems, hydraulic brake systems, and other industries. Length: 160 meters / 525 feet; Outer Diameter: 4mm / 0.16 inch; Inner Diameter: 2.5mm / 0.1 inch. PU tube pipe is designed with excellent flexibility and multiple folds without traces, made of polyurethane with a smooth inner wall, low coefficient of friction, and smooth flow of air or fluid. The flexible tubes can be bent in various shapes without other tools and can keep stable sizes with low permeability. All the sizes are manual measurements, most carbon fiber tubes will have an error of +/- 0.1 inch. Payment We accept PayPal and credit cards via PayPal. Taxes - US We collect sales tax, as required by law. Shipping We make every effort of shipping within 3 business day of payment clearing. The estimated delivery time is 2 - 5 business days from the shipping date. Policies If you do need to return your item, please contact us via email (you will receive an email when your product ships with additional details - Subject: Important information about your purchase). You will then be provided with a return shipping label and packing slip. Pack the item carefully. Include the packing slip, apply the shipping label, and return the item within 30 business days of the date you request a return, or your return will be canceled. Once we receive your order we will inspect the return. Please allow up to 5 business days of receiving the returned item for your refund.