Works with 110 BCD chainrings with 34t, 38t (for 36-38t) or 42t (for 40t to 42t).
The S!LVER chainguard sits close to the chainring, so it totally prevents the chain from jamming between the outer ring and itself.
Made of aluminum (don't let they magnet fool you, there is a steel door behind that white backdrop).
These chainguards take the place of the outer (big) chainrings on the crank. You can either use a big chainring OR one of these chainguards; NOT both at the same time.
