Interchangeable Thumb

The perfect fit every time!


  • Easy to install two-piece system
  • Interchangeable between different balls
  • Four locking mechanisms providing added security
  • Quickly and easily adjust your thumb size for a consistent fit and feel
  • Bottom support ring for 1-1/4″ inners to secure the slug
  • Adjustment bands allow for adjusting outer after drilling

Part Numbers:

66-430032-000 – Outer Interchangeable (black only)
66-430032-114 – 1-1/4″ Empty inner interchangeable (black only)



Support Products:

Loaded Inner Sleeves

Ultimate Epoxy

Drill Bit with Preset Collar


Ultimate Accessory Bag