SAC clutch mandrel kit for centering the clutch disc on the flywheel while installing the self adjusting clutch. Applications: BMW vehicles.Can also be used to align new and previously pre-tensioned SAC clutches. 5 sizes: 15mm x 23mm, 26.5mm, 28mm, 32.5mm, 34mm. Centering sleeve: 15mm, 32.5mm.