For posterior, anterior and bitewing xrays. 4 sets of each. 4 posterior: Rings, holders, arms 4 anterior: Rings, holders, arms 4 bitewing: Rings, holders, arms For taking accurate intraoral xrays on posterior, anterior and bitewing angles, All pieces included Good quality. Autoclavelable Compatible with: DEXIS, SCHICK, SIGMA, JAZZ, GENDEX Comes with a 12 month warranty on all parts. Great Universal digital sensor positioners. For various types of sensors. Compatible with DEXIS, SCHICK, JAZZ, GENDEX, SIGMA. Great for taking accurate intraoral xrays. Comfortable for patient. All packs included. Yellow blue and red (4 packs of each). All XCP kits in one. All pieces included. For adult size sensor.