Aligns seat brackets with the seat to reduce binding between your seat and your support struts. Eliminates torsional stress and pre-loads created by mis-aligned hardware and dis-similar angles between the seat surface and the strut face. Black anodized 6061-T6 aluminum 8.5mm I.D. x 41mm O.D. SOLD as a Set ( each set = 1 inner and 1 outer washer )
