Flex bit guide balls for straight drilling in wall cavities The new and improved Bumper Balls Kit includes a 1 1/2 and 2 in. model. Bumper Balls keep your bits centered and stop you from “bit walking”. Compatible only with 3/16″ shaft flex bits.
Flex bit guide balls for straight drilling in wall cavities The new and improved Bumper Balls Kit includes a 1 1/2 and 2 in. model. Bumper Balls keep your bits centered and stop you from “bit walking”. Compatible only with 3/16″ shaft flex bits.