Lab Microscope Parts M54x0.75 Adapter Ring 4/5/6/7/8/9/10/15/20MM Extension Ring Astronomical Telescope Accessories(9MM)

Product description: M54 x 0.75 internal thread becomes M54 x 0.75 external thread, which is used for astronomical photography with extended focus adjustment, and the shooting lens focuses through the combination of different lengths of extended focus rings. Parameters: 1. Item Name:Adapter Ring 2. Material: aluminium. 3. Colour: black. 4. Internal thread: M54 x 0.75 mm. 5. External thread: M54 x 0.75 mm. 6. Height: 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 15 mm, 20 mm. 7. Application: Extension tube for telescope photography. Package Content: 1 x Adapter Ring (Optional)

• Item Name:Adapter Ring
• Internal thread: M54 x 0.75 mm; External thread: M54 x 0.75 mm.
• Height: 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 15mm, 20m (optional)
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