Product Description .0625" thick This spacer is pre-drilled for the rear belt pulley studs Use them to achieve the proper offset of the rear pulley to the drive pulley when building wider bikes V-Twin Manufacturing Belt Pulley and Sprocket Spacer at RevZilla Browse all RevZilla deals $17.99 In Stock at RevZilla Price checked 5 days ago Buy Now at RevZilla Secure checkout Easy returns or compare prices Amazon eBay Product Details Brand V-Twin Manufacturing Size OS Condition New MPN 20-0346 V-Twin Manufacturing