Item DescriptionUpdated Z-shape inner plate for greater rigidity, faster and more precise shifting M-brace body design and geometry that is compatible with compact or traditional chainring combinationsUltra-Shift steel outer and inner cages with anti-friction and anti-rust treatmentsBraze-on fits frames with pre existing front derailleur braze-on *(can also be used with 31.8mm or 34.9mm band-clamp adapters), or use pre-sized band-clamp versions with the Even-O load distributing clamp. 92g (braze-on)Item Specificationsrings: doublespeed: 11spclamp: 31.8mmcapacity: 16Tmin/max: 34/54Tcolor: black: