The CRS-15.2 is a professional tool set for installation of crown races onto forks with oversized 1 1/4" and 1.5" steering columns. Using the long, strong driver tube, one of the included drifts, and a hammer or mallet (not included), the CRS-15.2 safely and accurately drives the crown race into its properly seated position. Includes two drifts - 1 1/4" and 1.5" - made from anodized aluminum to avoid damaging the crown race.