E2 micro E-Chains® are very small, one-piece and two-piece (B07/B09) E-Chains® with a low weight and therefore ideal for highly dynamic applications. E2 micro E-Chains® are stable and available in many versions. igus® also offers numerous accessories and mounting options. "UPGrades" of the snap-open versions are available for many types; they are interchangeable among themselves and can thus be used as, among others, spare parts pack for new installation options.