USMC HMM-164 KNIGHTRIDERS UNIT PATCH - COLOR - Veteran Owned Business. 3.5" WIDE BY 3.25" TALL PATCH. Quality Embroidered USMC HMM-164 KNIGHTRIDERS UNIT PATCH - COLOR. Durable iron on backing. Great Detail and Stitching for a Jacket or Vest. Great Gift for ANYONE! HatnPatch Is THE Veteran Owned and Operated Family Business - 2 Generations of Retired Marines - We Ship Your Order Within 24 Hours And Usually The SAME DAY!