One of Peter’s great advances to his tool designs is the addition of the captive bit system. The system incorporates a series of o-rings that like the name entails captures and holds a ¼ inch driver bit into the frame of the pocket tool. This simple design is quite ingenious and does the job rather well; it’s definitely a nice way to carry an extra bit without having it loose in your pocket. One design in particular I want to focus on is the Atwood Nibble. The Nibble is a close cousin to other Atwood pry tools in respect that its main duty is for prying and the other features are just extra Atwood goodness.