Made specifically to fit Thrashin Supply OG RisersIncrease your Thrashin Riser length with these spacersConstructed of 6061 billet aluminumMade in USAComes with hardware: 3-1/4'' long, grade 8 steel, 1/2''-13 thread type (same as risers), zinc yellow-chromate plated head screw and grade 8 washer to match