The shape shown in the picture is for 50mm models only. Other sizes are the shape below the picture. (Photo shows 0 degree stem angle); Color: Black or silver; Clamp diameter: 1.3 inches (31.8 mm); Stem mm/Stem angle: Weight: g/color; 50/0/173/Black/Silver; 70/0/147/Black/Silver; 80/0/149/Black/Silver; 90/0/160/Black/Silver; 100/1666666/16/Black/Silver 0/0 degree 171/Black/Silver 120/0de/178/Black/Silver 130/0de/184/Black/Silver 90/10de/160/Black/Silver 100/10de/166/Black/Silver 110/10de/171/Black/Silver 120/10 degree 178/Black/Silver 130 184 / Black Silver 45 OnePintFive/0°/163/Black 75 OnePintFive/0°/171/Black 95 OnePintFive/0°/179/Black