Pad Holder 17 NP92 Clutch 56505910 for Nilfisk BA 430, SelectScrub 17, Advance SD 17, Advance SD 4317, Advance Shadow 17 Two-Speed, Advance Shadow 17/20, Nilfisk SD 17/20, SelectLine 17TS, SelectLine 13, Advance All-Purpose Matador 17-20, Advance High-Speed Matador 17-20, Advance Pacesetter 170-200, Advance Pacesetter 17HD-20HD, Advance Pacemaker 17-20, SelectScrub 17, Micromatic 17B, and Pacesetter Floor Machines.