The Optimum® Apex locator supports endodontic treatments, through the measurement of the length of apical teeth. The unit provides clear bright LCD imaging with several color indicators to indicate the trajectory of the file clearly. Dimensions: 5.4" (length) x 3.03" (width) x 4.21" (height) Kit Includes: 1. Apex Locator unit 2. Measuring wire: 5958-485 3. File clip: 6018-597 4. Lip hook: 6018-560 5. Touch probe: 5958-467 6. Rechargeable battery and adapter 7. Function Tester: 5958-494