Optec 3000 3" to T-Thread M42x0.75mm Male Thread Adapter
Optec 3000 3-inches to T-thread M42 x 0.75 mm male thread adapter.
Full Tube length is 1.03-inches.
This adapter adds 0.08-inches of backfocus.
Adapter Side A3"
Adapter Side BT_Thread M42x0.75
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