1. Lift right-hand lever up to adjust the seat height. 2. Push in the right-hand lever to lock the seat position. Pull out the lever to unlock. 3. Turn the tension control knob clockwise or anti clockwise according to your body weight. 4. Angle adjustment headrest to provide the ultimate comfort and healthy neck support. 5. Lumbar height, forward & backward adjustment to provide an ergonomic back support that suits individuals of different lumbar height. 6. Height adjustment armrest with PU padding on top to provide comfortable resting position for the arm.		Adjustment Armrest Height adjustment armrest with PU padding on top to provide comfortable resting position for the arm.		Heavy Duty Knee Tilt Mechanism (M35) BIFMA standard heavy duty knee tilt mechanism with 5 position locking.
NB9+R1 Base Roller With US BIFMA standard passed nylon flat base NB9 with R1 50mm nylon castor.		Chrome Sledge Base (CC27) Highly durable chrome sledge base with outside diameter of 32mm.