hi thanks for looking. giant CFM 3 MTB frame, these Fantastic frames are made from a mix of carbon fibre & aluminium, from what I can see the crossbar, seat tube, & down tube are carbon & the rear triangle & all the joints are aluminium. which makes them very strong & lightweight. they look amazing stripped down to bare carbon & aluminium, if you want something unusual as a custom bike. the frame has no cracks or dents has various scratches from use & down tube from a frame mudguard that was fitted but all light 26" wheels 18" medium please study the photos as part of the description any questions please ask