1High Strength: Made of aluminum alloy, sturdy and durable, 3D forging process, matte surface, smooth and not hurting hands. 2Hollow and Lightweight Design: Concise, lightweight, hollow and shock absorbing design, strength and lightweight compatible, reducing the burden of riding. 3Improve Riding Posture: Angle can be adjusted, stem positive 90 negative 40 adjustable, which can release waist pressure and relieve back pain. 4Dust Proof Cover Design: Rubber dust proof cover is used to fit the vertical cover tightly, and it can be waterproof and dustproof after being locked. 5Product Parameters: Bicycle adjustable stem total length: 165mm/6.5in, center distance: 95mm/3.7in, installation height: 40mm/1.6in, torque setting: 1012N.m.Item Type: Bike Adjustable Stem Color: As Picture Shown Material: Aluminum Alloy TorqueSetting: 10-12N.m Weight: Approx.378g/13.3oz Stem Length: Approx. 165mm/6.5in Center Distance: Approx. 95mm/3.7in Front Fork Diameter: Approx. 28.6mm/1.1in Handlebar Diameter: Approx. 31.8mm/1.3in Adjustable Angle: Positive 90, Negative 40 Installation Height: Approx. 40mm/1.6in 1 x Bike Adjustable Stem