Bonanza Throttle-Mixture-Prop Knob Set - FAA PMA Approved. Gold (T), Red (M), Blue (P). Replacement of Throttle-Mixture-Prop Knob Springs is recommended with the installation of new knobs. Available in
Bought these for my 1978 Bonanza V35B. Throttle and Mixture knob work as designed, look great, and are a definite improvement on the cracked, stock knobs. But the prop knob is NOT a drop-in replacement for the Bonanza.