This is a vintage SR MTS-100 Slingshot Stem Double Clamp for Mountain Bikes and All-Terrain Bikes. It has a 1 inch Steerer Tube Diameter and a 22.2 mm Clamp Diameter. The stem is made of Aluminum and is 210 mm long. It weighs 22 oz and was manufactured in Japan in 1985. The stem is compatible with Suntour brand and has a Quill Stem Type. The package includes one stem. The abive was listed with AI. It was removws from an 85 mongoose ATB. The bike was very clean. Not a lot of miles on it. Shipping to lower 48 only