Pro plt stemthe pro plt stem is constructed from a lightweight but very strong 2014 alloy meaning that it is incredibly strong and stiff but lacking in bulk or excess material it is versatile too it can be fitted in either a positive or negative orientation so that you can get the right fit features material high performance lightweight and stiff 2014 forged alloy oversized stem oversized 31 8mm clamp diameter reduces unwanted flex under high load by increasing strength and stiffness revers