OD: 1 3/4"5/16"-18 THD Replaces Part Numbers: 101677X, 153066, 42076, 55803, 68049, 703928, 7068049, 791-153066, B1WE6 Manufature Part Numbers: 791-153066B 791-153066 Fitment: for Ryobi: 130R and 135R electric trimmers; 700R, 710R, 720R, 740R, 750R, 970R, CS720R, SS720R, Singer GT2815, GTS2816 and GTE2818; for Troy-Bilt: TB75SS and TB475SS; for Yard Machines: Y25 Y2500 Y2550EC Y26CO Y2700EC Y765 Y28 and 2800M; for McCulloch String Trimmer MT700 MT765; for MTD MP475, Pro String Trimmer; for Remington String Trimmer RM2520 Package Includes: 2x Bump Head Knobs ● Type: Bump Knob Left Hand
● Color: Black
● OD: 1 3/4"5/16"-18 THD

Part Numbers:
● Manufature Part Numbers: 791-153066B 791-153066
● Replaces Part Numbers: 101677X, 153066, 42076, 55803, 68049, 703928, 7068049, 791-153066, B1WE6

Fitment:
● for Ryobi: 130R and 135R electric trimmers; 700R, 710R, 720R, 740R, 750R, 970R, CS720R, SS720R, Singer GT2815, GTS2816 and GTE2818
● for Troy-Bilt: TB75SS and TB475SS
● for Yard Machines: Y25 Y2500 Y2550EC Y26CO Y2700EC Y765 Y28 and 2800M
● for McCulloch String Trimmer MT700 MT765
● for MTD MP475, Pro String Trimmer
● for Remington String Trimmer RM2520

Package Includes:
2x Bump Head Knobs