- Explorer N.23, probe CP15. - Laser markings: 1-2-3-4-5-6-7-8-9-10-11-12-13-14-15. - Color Coding: between 4-5mm 9-10mm 14-15mm. - To measure pocket depths around a tooth in order to establish the state of health of the periodontium with its long, thin, and blunted tip. - Color coded points used to measure periodontal pocket depth and attachment levels in millimeter increments. **For further product information, please contact Chat Support**