Specification Brand : Baglaum BulletPoint1 : This tube useful for lens without focusing ring. And it can be use as macro extension tube. There is no electronic elements in the adapter. aperture and focusing must be manually control. BulletPoint2 : Introduction: BulletPoint3 : M42 to M42 Mount Lens Adjustable Focusing Helicoid Macro Tube Adapter - 17mm to 31mm BulletPoint4 : The all-metal adapter is designed to fit the lens securely, yet can still be removed easily when not BulletPoint5 : Material: aluminum alloy Color : Black ExternallyAssignedProductIdentifier : 4861016899080 ItemName : Baglaum 3X Hot M42 to M42 Lens Adjustable Focusing Helicoid Macro Tube Adapter-17mm to 31mm, Black, 750115744 ItemPackageDimensions_Height : 9.6 centimeters ItemPackageDimensions_Length : 7.5 centimeters ItemPackageDimensions_Width : 7.5 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : camera-lens-adapters Manufacturer : Baglaum ModelNumber : 750115744 NumberOfItems : 3 PartNumber : 750115744 ProductDescription : Baglaum Made of Anodized Aluminum in Black with high quality. The length of this Helicoid tube is 17mm (min) to 31mm (max),it offers a total of 14mm movement distance for the lens focusing. You can use M42 screw mount lenses, such as or 42mm screw mount lenses, and even enlarger lenses. This Helicoid tube is useful for those lenses without focus ring, Tube offers fine focus control for macro photography. This focusing helicoid tube is made with 42mm front mount and standard 42mm rear mount and is made with light-weight alloy. It could be used as Macro Barrel. Automatic diaphragm, auto-focusing will not operate correctly while using this adapter. Manual focusing with mode metering is ok with the adapter. Compatible With: M42 Lens & Camera Package Include: 3 x M42 to M42 Mount Lens Adjustable Focusing Helicoid Macro Tube Adapter - 17mm to 31mm Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. ProductSiteLaunchDate : 2024-04-12T11:48:55.375Z SupplierDeclaredDgHzRegulation : not_applicable