Rival Front DerailleurLight Materials and light efford shifting deliver a heavy advantageShift Perfectly with both traditional sized and compact chainring sets.Size:Braze on clampSpeeds: double front,weight : 88g (102g clamp)Material: AluminumPicture ii's only ilustrative, tis actual item is not the seat tube clamp ones is the braze-on model wichs attachs to the Bottom Bracket!!!!!