Specification Brand : STEP UP RING BulletPoint : back focal distance 12-20MM ,It is adjustable BulletPoint1 : 58-62MM STEP UP RING BulletPoint2 : NEW BulletPoint3 : Build in Dynamic IC, Charger IC & Power fuse for rapid charging and over charge protection. BulletPoint4 : Tested Units. In Great Working Condition. BulletPoint5 : The adapter allows you to attach your M4/3 mount camera to lenses that have a Canon EF EF-S mount CompatibleDevices : Cameras ExternallyAssignedProductIdentifier : 5292350390930 ExternallyAssignedProductIdentifier1 : 0703508531105 ExternallyAssignedProductIdentifier2 : 703508531105 Finderscope : Reflex FocalLengthDescription : 20 millimeters InputVoltage : 240 volts ItemName : 58-62MM STEP UP RING New ItemPackageDimensions_Height : 7.3914 centimeters ItemPackageDimensions_Length : 3.6068 centimeters ItemPackageDimensions_Width : 7.112 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-adapters Manufacturer : STEP UP RING MediaType1 : Slide MediaType2 : Negatives MinimumSystemRequirementDescription : Windows 7 ModelNumber : Camflix 135 M MountingType : Wall Mount PartNumber : NONE PhotoFilterEffectType : Neutral Density PowerSourceType : Corded Electric ProductDescription : 58-62MM STEP UP RING. NEW. ProductSiteLaunchDate : 2018-05-03T07:00:00.000Z ScannerType : Film Size : Nikon adapter to M42 SupplierDeclaredDgHzRegulation : not_applicable WaterResistanceLevel : not_water_resistant