 
                Used to adjust crank chainline or take up any slack when using 30mm spindle cranks.
Specifications
| Inner Diameter | 30mm | 
|---|---|
| Outer Diameter | 41.5mm | 
| Thickness | 5mm, 10mm | 
 
            Used to adjust crank chainline or take up any slack when using 30mm spindle cranks.
Specifications
| Inner Diameter | 30mm | 
|---|---|
| Outer Diameter | 41.5mm | 
| Thickness | 5mm, 10mm |