Approved Removable Bowling Ball Devices
The USBC Equipment and Specification team's process for testing and approving removable bowling ball devices ensures that no movable parts exist inside a bowling ball, including the weight block, thumb insert, and finger grips. This ensures the safety of bowlers, protects the bowling establishment from potential damage, and preserves the integrity of the game. For further information, please consult the Equipment and Specifications Manual.
| Manufacturer | Product |
| Comfortable Lifestyles, LLC. | New Millenium Pro Grips Silicone Bridge Fusion Tufflon Thumb Grip |
| Donkee Products | Sure Fit Changeable Thumb Insert |
| Exactacator Inc. | VISE Interchangeable Thumb (IT) VISE Interchangeable Fingers (IF) |
| Griploc Products | Griploc |
| Jerome Products | Flip Grips |
| JoPo Grips Inc. | Twist Interchangeable Thumb |
| Master Industries | RevMaker |
| Multimed | Thumbthing |
| Perfecta-Grip Industries | Perfecta-Grip |
| Turbo 2-n-1 | Switch Grip (Thumb & Fingers) |
| Ultimate Bowling | Ultimate Thumb |