The Spinner Knob Pro Mechanic/Pro Mechanic HD Workstand is a spare for that used to rapidly tighten the clamp of the Pro Mechanic and Pro Mechanic HD workstands around your bike's seat tube. Its large, textured handle offers all the leverage you will need to effectively stabilise heavy mountain and E-Bikes.
Please note that the spinner knob is not compatible older Feedback Sports stands, such as the Ultimate and Pro-Elite, and that it will be at its sturdiest when Red Loctite is used to assist its installation.