Feature:1. HANDLEBAR MOUNTING BORE: Aluminum alloy mountain bike stem fits 31.8mm handlebar mounting bore, 28.6mm fork mounting bore.2. ALUMINUM ALLOY: The Road bike stem is made of aluminum alloy with CNC craftsmanship, smoothly surfaces and durable.3. HIGH STRENGTH: 31.8mm stem features a stylish cut out design that ensures strength and lightness at the same time, making riding more comfortable and easy.4. DIY REPLACEMENT: Short handlebar stem is a good replacement part for mountain bikes, suitable for DIY, modifying and upgrading bikes.5. PERFECT REPLACEMENT: Replace broken, damaged, cracked, unusable mountain bike stem, perfect replacement.Specification:Item Type: 31.8mm Mountain Bike StemMaterial: Aluminum AlloyLength: Approx. 35mm / 1.38inAngle: 0 DegreeHandlebar Mounting Hole: Approx. 31.8mm / 1.25inFork Mounting Bore: Approx. 28.6mm / 1.13in.Package List:1 x 31.8mm Mountain Bike Stem