Features:

• Black Anodized Aluminum 6061 T6 forged and CNC machined Stem
• Clamping Top load 4 bolt
• Handlebar Clamp for 31.8mm H-Bars only
• 1-1/8" fork steer tubes 
• Rise: 24.63mm
• Stack Height: 32mm
• 4 Sizes choices

Weight:
45mm : 239g
50mm : 256g
53mm : 267g
57mm : 280g