US Flags [Two Ply Polyester] Size:4' x 6' Embroidered POLY US FLAG • Galvanized corrugated steel ground • Galvanized corrugated steel ground sleeve with grounding spike PATRIOT COMMERCIAL Internal Halyard with Stainless Steel Cable and Winch • Brass Lock Grommets • Appliqued Stars On Flags larger than 15' X 25' Embroidered stars on all small flags • Rope & Thimble on flags 8' X 12' & larger • 4' X 6' & 6' X 10' Flags are finished with four rows of lock stitching • 8'X 12' & 20' X 30' Finished with six rows of stitching & zigzag stitching 5" up side hem outer rows • 20' X 38' and larger are finished with eight rows of lock stitching and 5" of zigzag stitching up each row & stitch box in corners of flag The fabric provides extra durability that can be gained by using POLYII