The KAC Keymod Flat Panel Kit includes a set of seven 5.5" polymer rail panels. Each textured panel snaps securely to any bare section of Keymod equipped rail, providing a more positive gripping surface and also insulating the support hand from barrel heat. While designed for the URX 4 rail, these panels will also fit any other rifle handguard that has a Keymod interface. Mfg: Knights Armament SPECS: Fits – Standard Keymod handguards. Panel Length – 5.5". Material – Polymer. Quantity – 7 panels. Color – Black or Flat Dark Earth.