Bicycle Fork Stem Extender Bike Handlebar Riser Head Up Adapter

Specification:
Material: 2012-9A; 
Total High: 120mm; 
Adjustable High: 0mm-70mm; 
Base Diameter: 1 1/8” (28.6mm); 
Fork stem dia: 28.6mm (standard); 
Color: Silver and Black for your choose; 
Stem adjuster: 4 spacers: 1 x 10mm & 3 x 5mm; 
Weigh: 185g; 
 
Features:
Using the Heads-Up, you can adjust the riser at your choice. 
 
How to install:
Insert STEM-UP onto the fork stem and place height adjusters onto STEM-UP until your preferred height level for your stem. 
Stem and wheel in the same direction and hignten clamping bolts of the stem. 
 
Package includes:
1 x Head Up Adaptor;