Removable Hexes Allow You to Change Wheel Offsets on the Fly Easily Replace Damaged Hexes or Upgrade to 14mm, 17mm and 12mm ProTrac Offset Hexes The 2 Most Common 12mm Offset Hexes are Included! Fits any of Pro-Line's 6x30 Removable Wheel Hexes for Tons of Custom Offset Options Wheel Made from High-strength, Durable DuPont Nylon Material