<p> </p> <p>Package included:</p> <p></p> <p>4pcs 12 inch Valve Extension Stem + 4PCS U-Chuck</p> <p></p> <p>Noice:</p> <p></p> <p>1.Please allow 0.1-0.5 inch difference due to manual measurement.(1 inch=2.54cm)</p> <p></p> <p>2. Instruction is not included.Professional Installation Is Highly Recommended!If you don’t know how to install, you can contact us.</p> <p></p> <p>3.Please check the size you need before you order.</p> <p> </p>