Description: Enhance your ride comfort and handlebar control with the KINGBULL Adjustable Bike Stem. Designed for flexibility and ergonomic support, it allows you to adjust your handlebar angle from 0° to 60°—perfect for a more upright or aggressive riding position. With a sleek sandblasted black finish and laser-etched angle markings, this stem is both durable and stylish. Features: Steerer Tube Diameter:28.6mm (1-1/8") Handlebar Clamp Diameter:31.8mm Extension Length:100mm Stem Height:40mm Adjustable Angle Range:0° to 60° Weight: 208g Not applicable models:Literider2.0, Verve, Ranger. Applicable models:Hunter2.0, Hunter2.0S, Rover2.0, Discover (ST)2.0, Voyager2.0, EX Titan, Jumper Go, Trekker. (*Note: Please be aware that the specific stem design may vary slightly across different bike models. The actual product received shall prevail.) How to install?