Includes (1) 791-181468B Bump Head KnobNew, Bulk PackedGenuine OEM Replacement Part # 791-181468BConsult owners manual for proper part number identification and proper installationPlease refer to list for compatibilityCompatible with the following: Ryobi: 705r, 705r, 705r, 705r, 705r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725r, 725rE, 725rE, 725rE, 725rE, 725rE, 725rE, 767r, 767r, 767r, 767rJ, 767rJ, 775r, 775r, 775r, 775r, 775r, 775r, 775r, 775r, 775r, 775r, 775r, 775r, 775r, 775r, 825r, 825r, 875r, 875r, 875r, 875r, 890r, SS725r, SS725r, 137R, 105Rolt, 105Rolt, 132Rolt, 132Rolt, 2075R, 975R, 825RA, 975R, SS725R, RLH100DS, 825r MTD: MP426CS, 41AD26SC900, 41BD26SC900, 41AD725C900, 41AD725G900, 875R41AD875A734, 705R, 705R, 705R, 705R, 705R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725R, 725RE, 725RE, 725RE, 725RE, 725RE, 725RE Troy-Bilt: TBSS, TBSS, TBSS, TBSS, TB32CS, TB32CS, TB25CS, TB25ET, TB25CS, TB25ET, TB25CS, TB25CS, TB25CS, TB25CS, TB25CS, TB25ET, TB25ET, TB475SS, TB25ET, TB475SS, TB475SS, TB475SS, TB75SS, TB75SS, TB75SS, TB75SS, TB75SS, TB75SS, TB75SS, TB525CS, TB525CS, TB525ET, TB575SS, TB575SS, TB425CS, TB425CS, TB425CS, TB425CS YardMan: YM132, YM137, YM137, YM21SS, YM25, YM26SS, YM26SS, YM26CS, YM26CS, YM26CS, YM75 Bolens: BL26SS41AD26SC965