Lens Adapter Ring Extension Tube Kit,camera Tube Telescope Covers,variable Tube Microscope Lens M42 Extension Tubes Microscope Accessories 3/5/7/10/15/20/30mm Telescope Accessory For Observation
?Easy To Install?: perfect replacement for old or damaged, reliable use.
?Made Of High-quality Aluminum Alloy?: wear-resistant and not easy to damage
?Using Fine Workmanship Cnc Technology?: higher precision and durable.
?Thread Specification?: The internal thread specification of the interface is M42x0.75mm, and the external thread specification is M42x0.75mm.
?Various Sizes?: 3mm/5mm/7mm/10mm/12mm/15mm/20mm/30mm various sizes, suitable for different models
0.39 x 0.39 x 0.39 inches
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