Adjusting Clamps for Boost Centerlock hubs.

• Front - PHB841(Silver), PHB841B(Black)
• Rear - PHB828(Silver), PHB828B(Black)
• Fits Boost Centerlock hubs ONLY

Adjusting clamp for R45 and R45D hubs.

• PHB860, PHB860B (R45 Rear, R45D 6-bolt Gen 1., R45D Centerlock Front)
• PHB735, PHB735B (R45D 6-bolt Gen 2, R45D Centerlock Rear)

Adjustment clamps are used to adjust bearing preload on Chris King hubs.

• Includes one Adjustment Clamp
• Fits ONLY Chris King ISO B Rear Hubs with twin-bearing driver/axle
• PHB712, PHB712B