Flexible Lumbar Vertebral Column Stand Up Assists Varies by size Select Ear:Left Ear Varies by size 3 foot cable * 90 day warranty * Fits Nonin 8500 9840 2500 9600 9700 2120 7500 series oximeters * Nonin PureLight sensors produce a high intensity pure light spectrum which eliminates variations in readings from patient to patient and sensor to sensor * A life sized functional model of the 5 Lumbar vertebrae with normal intervertebral discs * The model includes: * segment of the spinal cord with spinal nerves * the 5 lumbar vertebrae with intervertebral discs * coccyx * sacrum with removable cutaway * Flexible stand * Cannot be removed from stand * Size: 13 x 5 x 5 * Made in Germany by 3B Scientific GmbH