Specification AgeRangeDescription : Adult Brand : Melleco BulletPoint1 : Autoclavable Dental Handpiece Gasket BulletPoint2 : 4 Holes Silicone Replacement BulletPoint3 : 15 pcs - prevent oil, High-temperature sterilization BulletPoint4 : Material: Medical grade silicone material BulletPoint5 : Color: black Color : Back Teeth Directions : 1. Press and hold the power button of the main unit 'switch' for about 2 seconds before turning on. The power indicator light will be green to indicate that the power is complete. 2. Press the 'S' button of the host speed mode to set the speed range. There is low speed mode (a blue indicator), medium speed mode (two blue indicators) and high speed mode (three blue indicators). 3. When using, press the 'switch' below, the main machine will turn on the vibration of the working tip and turn on the LED lighting. Press 'change' again, the main machine will suspend the vibration of the working tip and turn off the LED lighting. 4. Battery Level Status Indicator: The main unit has battery level detection function inside. When the battery level is indicated. When the light is green, it means that the host is fully charged. When the power indicator is green and red, it means that the host is in half power state; the power indicator is red, indicating that the host is in a state of power failure; When the power indicator flashes red, it means that the host is about to lose power. ExternallyAssignedProductIdentifier : 6912011537939 ExternallyAssignedProductIdentifier1 : 0732014346590 ExternallyAssignedProductIdentifier2 : 732014346590 FdaDeviceClassification : i FdaIndicationOfUse : rx FdaInstructionsForUseType : na FdaLabelType : consumer FdaPremarketApprovalNumber510k : NO FdaPremarketApprovalNumberPma : NO HandOrientation : Ambidextrous IncludedComponents : 1x JT-19 Wet Model Trimmer Abrasive Disc Wheel Dental Lab Equipment ItemName : Melleco 15pcs Autoclavable Dental Handpiece Gasket, fits Midwest 4 Holes Silicone Replacement ItemPackageDimensions_Height : 1 inches ItemPackageDimensions_Length : 5.4 inches ItemPackageDimensions_Width : 4.2 inches ItemPackageQuantity : 1 ItemTypeKeyword : professional-dental-orthodontic-springs Manufacturer : GoNear Material : Rubber ModelNumber : GN-Gasket-4H NumberOfItems : 15 PartNumber : GN-Gasket-4H PowerSourceType : Battery Powered ProductDescription : Description 100% brand new and high quality Material: Medical grade silicone material prevent oil, High-temperature sterilization