Feature

●Supports parallel scribing, accuracy type 8209; B CN standard high 8209; end industrial 8209; class digital caliper holds IP54 and dustproof. Easy to install, perfect replacement for the old or damaged, reliable to use.
●The electronic brake caliper adopts a fine grinding process and also holds the high 8209; final stable chip. The female thread specification of the interface is M42 x 0.75mm, the male thread specification is M42 x 0.75mm.
●Made of high quality aluminium alloy, which is wear-resistant and not easy to damage.
●The female thread specification of the interface is M42 x 0.75mm, the male thread specification is M42 x 0.75mm.
●Care products: Magic care products ensure that you are happy every day. When you encounter this magical product, your fate is already doomed. Bring this destiny product home and reduce your problems!

Description

1. Easy to install, perfect replacement for the old or damaged, reliable in use.
2. Made of high quality aluminium alloy, which is wear-resistant and not easy to damage.
3. By using CNC technology with fine workmanship, the accuracy is higher and more durable.
4. The female thread specification of the interface is M42 x 0.75mm, the male thread specification is M42 x 0.75mm.
5. Different sizes of 3mm/5mm/7mm/10mm/12mm/15mm/20mm/30mm are suitable for different models.

Specification:
Item Type:Lens Extension Tubes
Material: aluminium alloy.
Colour: black.
Product size: approx. 1.18 inches, 12 mm / 0.47 inches.
How to use: extend the focal length of the main mirror of the astronomical telescope
Extinguishing treatment: internal with extinguishing thread.
Interface female thread specification: M42 x 0.75mm
Interface external thread specification: M42 x 0.75 mm.

Use:
1. Remove the objective lens.2. Connect the Teletubus to the eyepiece and objective lens.3. Then connect the lens.

Package includes:
1 x 3 mm extension tube.
1 x 5 mm extension tube.
1 x 7 mm extension tube.
1 x 10mm Extension Tube
1 x 12mm Extension Tube
1 x 15mm Extension Tube
1 x 20mm Extension Tube
1 x 30mm Extension Tube

Note:
1. Please allow 1-2 errors due to manual measurement. Thank you for your understanding.
2. Monitors are calibrated differently, the colour of the item shown in the photos may differ slightly from the actual object. Please take the real one as standard.