http://tinyurl.com/qzf7293<P>Ryobi Speed Spool Bump Knob Assembly 181468Product Review<P> Click on the link for more reviews<P>Bump knob assembly replacement for Ryobi's SpeedSpool trimmers<P>For use with Ryobi's 105R and 132R electric trimmers<P>For use with Ryobi's 725R, 767R, and 775R 2-cycle trimmers<P>For use with Ryobi's 825R and 875R 4-cycle trimmers<P>Replacement for your lost or broken bumphead<P>
