kalloy Adjustable Aluminum Stem Bicycle Angle Adjustable! Column Diameter: Oversize Adjustment Angle: 0-60 degrees Road Mountain Cross Bike Cycling AS-82025. 4mm Clamp Lenght: 90mm Barbore: 25. 4mm Steerer: 28. 6mm Founded in 1980, the company primarily manufactures stems, handlebars, and seatposts. We are expanding globally, including Europe, North America, Central and South America, the Middle East, Southeast Asia, and Northeast Asia. Product model number: AS 820 Color: Silver Size: 90mm Material: Aluminum Battery included or built in: No Packing size: 23. 6 x 16 x 4. 5 cm; 275. 99 g