The Scorpion accessory mounting Knob can be used in a variety of different ways, It can be used as a replacement knob to attach your camera to the Scorpion or Scorpion EX. The 1/4-20 threaded accessory knob can also be used to attach the Scorpion Accessory Wing to the Base plate of the Scorpion/EX. This creates a popular configuration known as side view. This unique configuration provides a great deal of flexibility ensuring you can always mount your gear to fit your needs. Keep a spare on hand in case you lose your mounting knob at a crucial moment. Includes: (1) Scorpion/EX Accessory Knob Constructed From: Composite Thermoplastic and Steel