Both types of adjustment knobs for the Life Fitness GX spin bikes.
Ref. Life Fitness GX Studio Bike with Console (Commercial Gym Equipment)
Life Fitness ICG Spin Bike Pedals 9/16" Updated Style Left Right Two Pairs
Life Fitness IC7 Spin Bike Primary Drive Idler Pulley Assembly 150-01-00069-02
Life Fitness ICG Spin Bike Pedals 9/16" Original Old Style Left Right Old Stock
4 x Life Fitness Lifecycle GX Studio Spin Bike & LCD Console 4 Cycle Set
Life Fitness Lifecycle GX Studio Spin Bike w/Console & iPad Mount Peloton Style
