Sell Focusing Helicoid Ring Adapter ,Adjustable, Metal Focusing Helicoid Adapter ,for Mount Lens ,Aluminium Alloy M42 to LM Replacement best price

Description: M42 to for Leica M LM Focusing Helicoid Ring Adapter 17-31mm Macro Extension Tube Length: 17mm to 31mm (14mm movement distance for focusing) This tube useful for lens without focusing ring or for mofify lens purpose. It can be use as macro extension tube. There is no electronic element in the adapter, aperture and focusing must be manually control. Material : High quality and compact. Made of aluminum alloy, 100% Brand New. Specification: Size: Approx. 6x6x3.5cm/2.36x2.36x1.37inch Front mount: M42 screw mount female Rear mount: for Leica M LM mount Length: 17mm to 31mm (14mm movement distance for focusing) Focus: manually Material: aluminium alloy Package Includes: 1 x M42 to for Leica M LM Macro Extension Tube Note: 1.Please allow 1~3 cm error due to manual measurement, thanks. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, thank you.