PSA Alcon CRH304 caliper bracket for 304mm discs (sold per pair)
https://www.rtec.ws/shop/crh304support304-psa-alcon-crh304-caliper-bracket-for-304mm-discs-sold-per-pair-244173
https://www.rtec.ws/web/image/product.template/244173/image_1920?unique=39dd7d0
Reference :
CRH304SUPPORT304