UPANBIKE Bike Stem 31.8Mm 45 Degree Bicycle Handlebar Stem Riser Suitable for B Bar bore clamp diameter:31.8mm(1.25''),Steerer Tube Diameter: 28.6mm (1-1/8"),Stem length:90mm (center distance of the two holes) Angle: +/- 45 degree.help to up or down the heigth of handlebar. Constructed of high-strength CNC machined 6061 T6 aluminum alloy.Weight:230g. Install upward: Raise handlebar. Make you bend less while riding, riding comfort and steering control Install downward: Low down handlebar, reduce wind resitance, ride faster. Specification: Material:Aluminum Alloy Stem length:90mm Steerer Tube Diameter: 28.6mm Handlebar Clamp Diameter: 31.8mm 40 Adjustable Color:Black Suit for:mountain bike,road bike,folding bike,fixed gear bike,and so on Features: High Quality and 100% New Brand Durable and Wear Proof Made from High quality Aluminum Alloy Package included:1 X Bike stem Item model number 50-171 Color Black Brand UPANBIKE Material Aluminum Manufacturer Part Number 50-171 Item Weight 4.9 ounces Bike Type Road Bike, Fixed-Gear Bike, Mountain Bike Is Discontinued By Manufacturer No Package Dimensions 5.51 x 2.6 x 1.5 inches Manufacturer UPANTECH Shipping Fast shipping is very important for us. Our standard US shipping service is FREE. Your order will be shipped within 2-3 business days upon full payment received. Your order will be delivered within 2-3 business days after the handling time. We only ship to the confirmed PayPal address. We reserve the right to cancel any order for any reason at any time. We are not responsible for undeliverable addresses. Returns and payment We offer a 30 days return policy from checkout winning date. We allow only PayPal as payment method FeedBack Your feedback very important to us, after you get your package and you are satisfied with our service please leave us positive feedback If you have any problem with your order / any questions please before leave any type of feedback For any questions, using contact system Please visit our store to check out other items for sale! Thank you for shopping at our store.