XCP-DS Fit Endodontic Only Kit. Digital X-Ray Universal Sensor Positioning System. Stretchy, universal digital sensor biteblocks accommodate any brand of any size 1 or 2 sensor. Autoclavable. Kit includes: 2 - XCP-DS Endodontic Biteblocks, 1 x Endodontic ring, 1 x Endodontic arm. Endodontic kit