AD 56505330 16" Pad Driver for Nilfisk Advance Floor Machines. A 16" diameter block with short trim (1/2") polypropylene filaments to securely hold your floor pad. Includes riser plate and 47 series clutch plate. These fit most 17" floor machines including, Convertamatic 17B-2, Convertamatic 17B, Matador 17, Matador 17AP, Matador 17APJ, Matador 17HD, Matador 17HS, Matador 17S, Micromatic 17B, Micromatic M17B, Micromatic M17E, Mobilmatic 17, Mobilmatic 17B/1B-5, Pacemaker 17, Pacesetter 17, Pacesetter 17HD, Pacesetter 170, Pacesetter 170HD, SelectLine 17, SelectLine 17HD, SelectLine 17TS, KF17SL-SelectLine 17, KF17SL2-SelectLine 17TS, KF174SL-SelectLine 17, SelectScrub 17, Shadow 17, Shadow 17 Two Speed, Spin 17, and Twin Spin 17. Some models may require the 92 series clutch plate. Please check your model or existing pad driver/brush for markings on the pad driver before ordering. 47 series clutch plates are listed as "silver series", 92 series clutch plates are listed as gold series. If a 92 series clutch plate is required, please use AD 56505910. One pad driver required per unit. Priced Each. Replaces Nilfisk Advance 56505330. Our Part Number AD 56505330.