The GRIPPER 3 Black Shaft from UNICORN are white colored shafts consisting of nylon with a ring and are available in 2 sizes MEDIUM: Length 44.20mm, Weight 1.03 grams. SHORT: Length 34.40mm, Weight 0.78 grams. You can easily replace shafts with any dart. They are available in different sizes to customize your dart in length and feel. Sizes: XX-Short/Micro, X-Short, Short, In Between, Medium & Long. In addition, they also consist of different materials: nylon, carbon, plastic, metal, etc. In short, you can adjust your dart to your own taste and feeling through different types of shafts.