swivel tilt mechanism

Vinsetto Vanity Middle Back Office Chair Tufted Backrest Swivel Rolling Wheels Task Chair with Height Adjustable Comfortable with Armrests

Merrick Lane Mid-Back Height-Adjustable Armless Swivel Office Chair with Wheels - Padded Upholstered Back and Seat, Strong Frame

Emma and Oliver Mid-Back Armless Swivel Office Chair with Wheels, Padded Upholstered Back/Seat, Adjustable Height, and Sturdy Frame