Lecarra starts with one piece of billet aluminum the grade is 6061 T-6 which is an aircraft grade. The frame is cut out as one piece so there are no welds or crimps of the spokes at the rim. Choose from 14 colors of leather: black, brown, burgandy, blue, caramel, dark grey, light grey, red, tan, white, oyster, bright red, bone and teak. Also, most frames are available in polished, satin, black and chrome spokes.