LFPartS Stainless Steel License Plate Frame Self-Tapping Screws Fasteners ((4X) M6x20, Self-Tapping Screws + Black Screw Covers) Stainless Steel License Plate Frame Self-tapping Screws Fasteners + Black Screw Covers. The screws made of high quality 304 Stainless Steel, will never rust. The Screw Covers made of high quality ABS plastic. M6x20 Designed to fit most American and Import cars license plates and frames. Pkg Includes set of 4 Screw Covers and SS Screws.