Add stability and turning radius to your ride while cutting down on wheel-bite with these Sector 9 Riser pads. Sector 9 Risers are made from high grade materials. Their unquestioned strength and unmatched durability are just what you should expect from a company dedicated to bringing you the world's best skateboards and accessories. These risers measure 1/4" to 1/2" and will fit on both old school and new school bolt patterns.