Three different holders. Made to fit your sensor. Sensors from different manufacturers differ slightly in size. Width, length and thickness vary. That is why we chose to custom make the claw size to ensure a perfect fit. TrollByte Kimera is made in slightly different sizes and tested to suit a variety of sensors, currently we have tried out a little over one hundred sensors. When choosing a TrollByte Kimera for your sensor, you can be sure that it will fit perfectly.Contains1 TrollByte Kimera Blue for anterior PA and vertical bitewing1 TrollByte Kimera Yellow for posterior PA1 TrollByte Kimera Red for horizontal bitewing1 bite block for anterior PA1 aiming ringFeatures:Stable arm makes it easy to position the sensorSofter and flexible claw makes it possible to fine-tune the fit to reduce the risk of tearing the sensor coverHolder, ring and bite block are autoclavableThere are 5 slots for different image positioning on the aiming ring. Color coded to match the color of the holder.