Made specifically to fit Thrashin Supply Risers Increase your Thrashin Riser length with these spacers Constructed of 6061 billet aluminum Made in U.S.A. Comes 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. SPACER RISER 1/2" CHR