2Pc optical shaft with thread two ends of M3/M5/M6/M8 thread hole depth of 8-16mm Linear shaft OD6/10/12/16/20mm Length100-550mm

2Pc optical shaft with thread two ends of M3/M5/M6/M8 thread hole depth of 8-16mm Linear shaft OD6/10/12/16/20mm Length100-550mm

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