I have for sale vintage cockpit consisting of a chrome-plated adjustable stem manufactured by Khvz of the late 50s and a steel chrome-plated handlebar of unknown manufacture.

 The stem has many different small dings and chrome loss, the clamp has a small crack near the handlebar mount (see photo). 

The stem has a diameter of 22.0 mm for a steerer tube and a clamp of 25 mm. 

The handlebar has a diameter of 22 mm along its entire length, and a 22-25 mm reduction bushing was used to fix it in the clamp. The chrome on the handlebar is in excellent condition without scratches or rust.