BOX Cosine Chainring 104BCD x 40t - Black MPFN-MTB34FN They are designed for 4-bolt

They are designed for 4-bolt or 5-bolt FSA cranks such as Gossamer SL-K and K-Force with asymmetric bolt spacing

Ultra-wide 64mm clamp width

Optional Speed Lock technology greatly facilitates installation of the brakes on frames that have internally routed housing

}Schwalbe Lugano II Tire - 700 x 28 Clincher Folding Black Active Line

BOX Cosine Chainring 104BCD x 40t - Black MPFN-MTB34FN They are designed for 4-boltCNC machined 6061 T6 aluminum with rounded tooth profile to reduce chain wear 3rd party web sales must be an Authorized Dealer TECH SPECS ring type single mount 4x104mm teeth 40t oval round round color black