It is compatible with the A901 mixer. No manual but looks easy to fit.
Kenwood A920 Mincer Attachment for Chef Model A901 Includes Box
Kenwood A920 Mincer Attachment for Kenwood Mixers with Box
Kenwood A920 Mincer Attachment for Kenwood Mixers
KENWOOD SHREDDER/SLICER ATTACHMENT FOR CHEFFETTE MODEL A355. MODEL A354