Campagnolo ProTech bottom brackets feature a patented external sealing ring design that protects a strong, resilient fiberglass-charged polyamide central tube from the harmful ingress of water, mud, and grit. 

• Spindle Interface Type: Campagnolo Ultra-Torque
  
• BB Shell Width (mm): 86
  
• Bottom Bracket Shell I.D.: 46
  
• BB/Frame Interface: 386 EVO
  
• Defined Color: Black
  
• Weight: 50