2 Rubber Shockpads - or Riser Pads. Whatever you call 'em, they belong, if you like, between your deck and the trucks to prevent "Wheelbite". MOB Shockpads are available in two sizes: 3 mm (for all boards cruising on wheels up to 58 mm) and 6 mm (for all boards cruising on 60 mm (or bigger) wheels like Cruiser- or Longboards. Special Feature: Die-Cut MOB SKULL logo.