Stocky, superlight stemsLight enough for XC strong enough for All Mountain.3D Forged 6061 T6 hollow alloy body2D forged 2014-T6 bar clamp.4 x Cr-Mo M5 bolts for bar clamp.2 x opposing M6 bolts for steerer clamp.Stack height 45mm.+/- 5 degree (Flip Flop)Extensions: 50,60,70, 80 or 90mm options.Fits with most MTB or Road bars;31.8mm bar clamp diameter.Polished and black anodised.Weight: 60mm 146g