Vintage SUNTOUR Power Shifter 5,6 Speed, stem mount, used, VGC.
It is a 5 or 6 speed, mount on the stem of the bike.
It has only one lever, to change the speed on the rear wheel free wheel.
Can be used on a 5 speed banana seat bike, or a 5 speed cruiser bike. A bike with a single sprocket crank set.
It is in a very good condition, probably was not mount before.
Has some lost chrome.
See pictures for more details.