Teknik Leader 6987 Bonded Leather Tilting Executive Chair Black. The Leader from Teknik Office is our durable bonded leather faced chair in Black with a padded rest for your head, sturdy nylon five star base and matching armrests. It has the usual executive features such as a gas lift height adjustment with recline tilt function and adjustable tension, perfect for all users' comfort.The smart appearance of the extra padding on the backrest for your head and the neutral colouring complete the effortless style of this great all rounder. Great for up to 8 hours a day use and rated up to 115kg. This chair from Teknik features durable black nylon armrests and a sturdy black nylon five star base. What is more, this office chair features gas lift seat height adjustment and recline tilt tension. Seat Height Adjustment: 500mm - 600mm.