For Mazda Miata MX5 Black Twin Loop Roll Bar - NA NB Made of Lightweight SUS-304 Stainless Steel for Strength and Durability Powder-Coated Finish for Extra Wearing and Rusting Resistance Bolt-On Design for Ease of Installation Enlarged Diameter Tubing for Extra Reinforcement Application: Please Check Part Finder on Top of The Page (Professional Installer is Highly Recommended No Instruction Included)