5mm Metal Extension Tube for M42X1mm Lenses Key benefits Durable full metal construction provides stable, reliable mounting and long service life. 5mm extension adds closefocusing capability to increase magnification for macro and detail work. Compatible with lenses that use M42X1mm threads for straightforward attachment and versatile use. Minimizes lens wobble and maintains secure alignment for sharper closeup images. Why you need it Extends the working range of compatible lenses to capture finer details without buying a dedicated macro lens. Solid metal build solves common problems like loose fittings, play in the mount, and light leaks that can degrade closeup shots. Small 5mm length offers a subtle increase in magnification while keeping handling and balance close to the original lens feel. Function and performance Acts as an optical extension between camera and lens to reduce minimum focus distance and enlarge subject reproduction. Precision M42X1mm threading ensures a tight, repeatable connection for consistent framing and focus. Compact 5mm size preserves ergonomics and is easy to add or remove during a shoot. Specifications Material: full metal construction Extension length: 5mm Thread: M42X1mm (for lenses and adapters with matching thread) Practical use scenarios Product photography: Capture small product details such as textures, labels, and fasteners for clear ecommerce images and closeup documentation. Nature and macro photography: Photograph flowers, insects, and other small subjects with improved detail while maintaining stable lens alignment. Jewelry and inspection work: Reproduce fine details on jewelry, electronics, or mechanical parts for cataloging, appraisal, or quality checks. Notes Confirm that your lens or adapter uses M42X1mm threads before to ensure compatibility.