Macro Focus Lens Adapter with Built-in Helicoid for M42 Mount

This macro focus lens mount adapter allows you to attach M42 42mm screw mount lenses to cameras with the same mount. It features a built-in focusing helicoid, enabling precise manual focus adjustments. The adapter supports a focusing range from 12mm to 17mm, making it suitable for close-up photography. Its sturdy construction ensures durability and reliable performance. The design is simple, allowing for easy installation and use without additional tools. This adapter is ideal for photographers seeking to expand their macro photography options with compatible lenses.