Material: Carbon.

Size: 31.6mm.

Weight: 195g.

Other available seatposts:

A19A2 Material: aluminum Size: 27.2mm, 31.6mm Weight: 336g	A19AS Material: aluminum Size: 31.6mm x 350mm(L) Color: silver	A19AB Material: aluminum Size: 31.6mm x 350mm(L) Color: black