Specification Brand : Andoer BulletPoint1 : Suitable for lenses with M42 mount without focus ring. BulletPoint2 : Can be used as a macro extension tube. BulletPoint3 : No electronics, manually control the aperture and focus. BulletPoint4 : Aluminum alloy material, CNC precision machining, durable and sturdy. BulletPoint5 : Easy to install and simple to use. Color : Black ExternallyAssignedProductIdentifier : 8016666093647 ItemName : Andoer M42-M42 (25-55) M42 to M42 Mount Lens Helical Focus Ring Adapter Ring 25mm-55mm Macro Extension Tube ItemPackageDimensions_Height : 3.5 centimeters ItemPackageDimensions_Length : 7.5 centimeters ItemPackageDimensions_Width : 7.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-extension-tubes Manufacturer : Andoer ModelName : 208022 ModelNumber : HotcoS6666 NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : YHS9933232451114HG ProductDescription : null Features: Suitable for lenses with M42 mount without focus ring. Can be used as a macro extension tube. No electronics, manually control the aperture and focus. Aluminum alloy material, CNC precision machining, durable and sturdy. Easy to install and simple to use. Specifications: Material: Aluminum Alloy Lens Compatibility: M42 Screw Mount Lens Length: 17mm-31mm / 25mm-55mm / 36mm-90mm (optional) Packing list: 1 x adapter ring ProductSiteLaunchDate : 2024-01-31T08:54:51.944Z Size : One Size SupplierDeclaredDgHzRegulation : not_applicable UnitCount : 0.0353