Model Number: Bike Computer Stand Name: Multifunctional bike computer stand Type: Bicycle handlebar extension Used for: Mounting the bike stand Function: bicycle computer support Feature 1: Install riding accessories Feature 2: Bike Speedometer Support Feature 3: Handlebar Extensions installation : 1. Use the hex wrench to remove the screw. 2. Put the bracket on the handlebar, adjust the position and tighten the screws. 3. Install the stop base to the bracket. 4. Finally, install the computer. Mounting Diameter: 31.8 mm/1.25 inches Colour:black Material:PC+TPU Size:10.6 x 6.6 x 4.3cm Package Contents: 1 x bike stand Only the above package content, other products are not included. Note: Light reflection 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.