Replacement Part for Office Chair Swivel Chair Executive Chair Seat Mechanism TILT-A Base Plate for Attaching Under Seat Padding Height Adjustment and Rocker Mechanism Quality branded product - chair mechanism made of steel, extra stable - hole dimensions for the screws L 200 mm x W 150 mm Rocker function with lock in zero position - hand wheel for weight adjustment with grip protection 2-year manufacturer's guarantee - tested safety - can hold up to 200 kg Suitable for all swivel chairs, office chairs, swivel chairs, executive chairs, Topstar, Nowy Styl, Mayer, Easychair, IKEA etc. Quality branded product, no Far East Sheet steel, extra stable TILT mechanism for all common office chairs Wiping function with blocking in the zero position Hand wheel for weight adjustment Handle protection Height adjustment for gas spring 2 years manufacturer warranty