Comes with 4pcs valve caps,1 Wrench and 4 anti-theft screws! Color: Black Material: Black Chrome metal material Height : 12 mm Inner diameter : 7 mm Outer diameter : 11 mm Description: Anti-theft tire stem valve caps Feature: 1."O" ring seal ensuring a clean valve orifice to maintain consistent tire pressure. 2.These air valve caps were equipped with anti-theft function, is not easy to steal. 3.Easy installation and disassembly → Simply fasten the screws to the tire stem and install without any tools. They are easy to disassemble, the inner sleeve made of copper material, to prevent the aluminum alloy thread rust and spool adhesion, so as to avoid prolonged use can not be removed after the situation. 4.This looks simple → exquisite cylindrical design style offers excellent grip to rotate them, stylish design with unique and excellent materials that make your rims and tires more attractive and add a nice look to the wheel.