Starboosa Telescope T2-Extension Tube Kit for SLR Cameras and Eyepieces - Length 5mm x3; 7mm x3; 15mm x3 - M42x0.75 on Both Sides (9 Set)

Starboosa Telescope T2-Extension Tube Kit for SLR Cameras and Eyepieces - Length 5mm x3; 7mm x3; 15mm x3 - M42x0.75 on Both Sides (9 Set)

• Extension tube kit is used to obtain the correct image focal length or exact spacing required, thereby solving the spacing problem in astrophotography. This set includes 5mm; 5mm; 5mm; 7mm; 7mm; 7mm;15mm; 15mm; 15mm. An upgraded package of 9 Extension Tubes.(Tips: The inner side of the tubes have thread for eliminating reflection. The connection port thread at both ends is M42x0.75.)
• The required spacing can be achieved by combining several extenders of differing lengths;you can use 1 piece;2 pieces;3 pieces ;4 pieces;5 pieces;6 pieces; 7 pieces of the extension rings as you like.
• The M42x0.75 threads on both ends make it versatile. External thread M42 * 0.75; internal thread M42 * 0.75; a series of focusing problems are eliminated.
• By combining multiple extenders of different lengths, you get the right focal length to focus with the camera or eyepiece.
• All metal construction and anodizing aluminium process;durable for long time use.