The excess thick 4mm carbon straight back human body post owner improves durability and protection from reduced human anatomy post flex. The human body post owner features 6 holes with 1.4mm spacing the trunk human body articles plus an additional bulkhead mounting place from the 1.1mm spacing for easier and much more accurate mounting with this included horizontal right back human anatomy articles. CNC-machined from premium high-grade carbon soluble fiber product claimed in united states of america.