12mm Offset Seatpost features:

• 3D forged single piece alloy shaft and head
• Interchangeable clamp design for standard 7mm (alloy) or 9mm (composite) saddle rails
• Reversable outer clamp design allows for 12mm or 23mm offset options
• Extra long lower saddle rail guide designed to cradle lightweight saddle rails securely

Zero Offset Seatpost features:

• 3D forged single piece alloy shaft and head
• Interchangeable clamp design for standard 7mm (alloy) or 9mm (composite) saddle rails
• Zero offset clamp allows for infinite adjustability
• Extra long lower saddle rail guide designed to cradle lightweight saddle rails securely