GRIPZ Aluminum Ball StretchersCNC machined aircraft grade aluminum with a unique hand laid rubber insert around the outside.  These are super cool looking and feel incredible too!Available Sizes:1 5/8" inside diameter x 1" length1 5/8" inside diameter x 2" length1 7/8" inside diameter x 1" length1 7/8" inside diameter x 2" length1" length stretchers feature 2 rubber lines2" length stretchers feature 3 rubber linesMade in the USA