LFPartS Stainless Steel Rust Resistant License Plate Frame Screws Fasteners (M6x20 Security Machine screws, Metalic) Stainless Steel License Plate Frame Machine Security Screws. Protect your license plate and license plate frame from theft with this locking hardware. Each uniquely designed screw head can be loosened only with a special key. These screws are made of high quality Stainless Steel for license plates and frames. Rust Resistant, will never rust or corrode. Includes Machine screws thread size: (4) M6x20mm. Designed to fit most American and Import cars license plates and frames. SATISFACTION GUARANTEE: You will receive, EXACTLY [ AS PICTURED ] / EXACTLY [ AS DESCRIBED ]. We take pride in delivering top quality products and are proud to offer our friendly 90 day money back guarantee in case you are not 100% satisfied and wish to return the product for ANY reason.