Frontload stemMaterial: 6061 T6 aluminiumReach (mm): 50Extra info:extremely light and strong,6mm micro head hollow bolts,updated design with lower stack height,unique offset rear for improved clamping,material saving and unique look,maximum 'hannibal' machined design so weight is minimal,includes set of regular 6mm solid boltsWeight (kg): 0.277Color: black, oilslick, high polished