Sparingly used Yo-Yo desk converter (120 cm version), in black for sale. The up & down is using a smooth hydralic system - requires minimal to no effort to raise and lower and is noise free. All functions work perfectly fine.
Pick up from SE17, Elephant & Castle or can be delivered within 4 miles for £5.
Search for "Yo-Yo Desk 120" and you can see all product details. Brand new costs £380, so yours at a hefty discount.