Restore your office chair with a durable heavy-duty tilt mechanism. Smooth height adjustment and adjustable tilt tension for a comfortable seating experience. -Heavy-duty steel construction -Smooth height adjustment lever -Adjustable tilt tension control -Compatible with most office chairs -Easy replacement and installation -Suitable for office chair, gaming chair and study chair Specifications Size: 10in / 11in Mounting Hole Distance: 152*220mm, 152*252.2mm Material: Heavy Duty Steel Color: Black Package Included 1 x Office Chair Tilt Mechanism