S8296 M48 spiral telescopic extension bucket 34-64mm spiral fine adjustment, precise adjustment of intercept after fine adjustment

S8296
M48 spiral telescopic extension bucket
M48-0.75 external thread, 5MM
M48 * 0.75 internal thread, 5MM
34-64mm spiral fine adjustment size
Can test the precise position of the intercept after leveling the field
Multi functional features such as fine adjustment of photography focus and extension bucket