Rack A Tiers Bumper Balls Kit

Rack A Tiers Bumper Balls Kit. What in the world are Bumper Balls? The Bumper Ball by Rack A Tiers is simply a ball you place on your flex bits to keep the bits from making an unwated exit through the drywall. If you have ever had a flex bit shoot out the wall, you know it's a pain to fix and doesn't typically impress the client. Kit includes a 1-1/2" and 2" Bumper Ball. Flex bits not included.