The AgaMatrix Universal Lancing Device is used to draw a sample of blood for use with a blood glucose monitor. The device is adjustable and can be changed to select the lancet depth of penetration to minimize discomfort. Features: Adjustable depth settings (8 different depths) 1 to 3 - for delicate skin 4 to 6 - for normal skin 7 or 8 - for thick or callused skin UniversalThis device can be used with any standard round-barrel lancets.Caring for your Lancing DeviceClean the lancing device as needed using mild soap and warm water. Dry the lancing device thoroughly. Isopropyl Alcohol (70%) can be used to disinfect the device.