Have your Greenworks tools working like new again with our parts and accessories. Green bump knob for select Greenworks tools, product numbers: 2103902CTBT, 2103102CT, 2102502, CK80L410, 2102602, ST60B00, 060-2345-4, 274-1749-2, 060-2345-2, ST40L00, 1229648, 1302902, ST80L00, 2100402, 2106902