TOSEEK Bicycle Stem Aluminum Carbon Stem MTB Mountain Bike Stem Bike Road Parts Handlebar Clamp 31.8mm 3K Glossy 6 degree 17 degree Carbon Fibre composite construction Reinforced brake lever zones 3K carbon weave Material:Aluminum + 3k Carbon wrap Fork Diameter:28.6mm Handlebar Diameter: 31.8mm Length 6 Degree:60/70/80/90/100/110/120mm Length 17 Degree:70/80/90/100/110mm Weight:125±10g Bike Type:Mountain Bike / Road Bicycles 1year quality guarantee Passed EN 14766 Sandards and the JAPAN JIS test Standards. Packing includes:1Pcs Bicycle Stem Buy from Us! 100% POSITIVE FEEDBACK 100% Warranty & After Sale Service 100% PARCEL ARRIVAL GUARANTEED 100% x hidden charges 7 days size exchange 7 days 100% Guarantee back Prompt response Registered SSM company- Icebikeheaven 8 Years of experience