We know that gripping a pencil-style glass cutter can be hard on the fingers after a while. This foam grip eases the strain, allowing you to work comfortably. Installing it on your cutter might be a minor struggle; the larger the cutter the harder it is to install -- much like donning Spanx. However, like Spanx, it's worth the effort. Unlike Spanx, you don't need to remove it at the end of the day. Made in the USA.