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- for use with SYS 40
- retainer ø 25 mm / 25,4 mm (1") and aperture ø 20 mm
- fine adjustment through fine-thread screw or micrometer
- for use with SYS 65
- retainer and aperture ø 25 mm
- fine adjustment through fine-thread screw or micrometer
- retainer and aperture ø 40 mm
- fine adjustment through fine-thread screw or micrometer