Installation is simple, just connect the original front fork rod. Four bolt rod clamps securely fix the rod in place. Made of high-strength CNC machined 6061 T6 aluminum alloy. The universal short handle rod is suitable for most road bikes, stationary bikes, mountain bikes, downhill bikes, track and field bikes, , BMX, , etc. Handlebar center diameter: 25.4 mm (1 inch) Stereo tube diameter: 28.6mm (1-1/8inch) Length: 32mm / 60mm Weight: 160g Style: High-strength stem Colour: black Material: aluminum alloy Size: 3.18 x 3.5CM Package Contents: 1 x mountain bike stem Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.