ITM Alutech Wing 7075 Bicycle Seat Post (White)Al 7075 alloy seat post. Two bolts, high rigidity and maximum lightweight. Length: 350mm, Diameter: 31. 6, Offset: 25mm Features: EPS Technology The special EPS technology used for these items permits, even in a structure with differentiated thickness, to obtain a homogeneous distribution of resin and fibre layers thus providing a safe, constant and controlled distribution of stress point concentrations. Recommended for Road Riding. Color: Black White.