Quick Fist® Rubber Clamps. These clamps are designed to hold 1”-2.25” items of any shape, perpendicular or vertical, up to 25 lbs. per clamp. They are made in Nashville, TN and you can read more about the clams on the www.quickfist.com website.
For instructions to use these No Slip Grips, AKA: Quick Fist® Rubber Clamps, instructions are in the photos.