These two short sections of flex-arm material are a great accessory to your Nasty Clamps, and will allow you to add a total of eight extra inches to an individual clamp's arm*. Each section is four inches in length and completely modular. In other words, the sections can be attached to each other (creating that total of eight inches), or broken apart into individual or multiple segments.
*Note: Adding extra length to your clamp's flex-arm (beyond its standard length of six inches) will reduce the amount of weight that the arm can support without bending. Be Nasty, but work safely.
†Another Note: These flex-arms are made of Delrin®, which is a very high-quality plastic. Delrin® has a strong resistance to UV radiation (very important if you're doing a lot of outdoor work with your clamps), and also happens to be fairly tolerant of harsh chemicals and solvents. With proper care, and semi-regular cleaning, your flex-arms and Nasty Clamps should last for quite a long time.