This is a super cool set of mid-tier Suntour Accushift shifters, intended for the AT1000 derailleur & alpha 2000. Please read the instruction manual before hooking these up to suntour derailleurs. Shifting levers are made of plastic (one may need to be tightened a bit) and the body is either steel or alloy. Probably steel.
Great shifters for your late 80's-early 90's suntour equipped MTB, these are the all terrain model anyways.
Check out our other great listings of used/NOS cycling parts and accessories, you may find something you want/need!