Vintage industrial screw stools

Set of 2 vintage industrial stools from the 80s, with adjustable structure, wooden, swivel and white metal tube. Very good condition, with very slight traces of use and age, on the metal structure. The round wooden seat is smooth with a raw wood color and varnished finish. The swivel mechanism and screw work without problems. Rounded frame for four-bar footrest. Solid, stable and fully functional. Maximum height 77 cm. Minimum height 63 cm seat diameter 32 cm.