GripLoc Products, LLC was the first to design a "no tool required" interchangeable thumb system. GripLoc allows a bowler to use a single bowling ball and simply lock in a different size thumb insert to eliminate release problems due to thumbs shrinking and swelling. This insert will be specifically selected and/or customized to the bowler's thumb and unique style. Visit GripLoc's website at griplocproducts.com for additional product details and ordering information.
"Load & Lock with GripLoc"