Type:Bike Quill Stem Adapter Length: 160mm/6.3 inch Material: Aluminum Alloy Color: Silver,Black Base Diameter(Upper diameter): 1 1/8'' (28.6mm) Steerer tube diameter:22.2mm/25.4mm Weight: about 155/180 grams Package Includes:1 Pc Bike Quill Stem Adapter This premium quill stem adapter riser made of high quality aluminum alloy- sturdy, solid, high strength but lightweight Raises the height of your handlebars by increasing the height of your stem. Apply to 25.4mm to 28.6mm and 22.2mm to 28.6mm Front Fork Head Tube Converts mountain bicycle/ folding threadedless quill setup to threadless. Easy installing, operation and flexible
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