16GMT-MM

16mm
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Marking Tool

The Hoke Gyrolok® Marking Tool is designed to help installers visually confirm whether a fitting has been properly tightened. By applying an alignment mark across the nut and body, the tool helps ensure reliable, consistent tube fitting assembly.

Available in: Hardened Steel

Sizes: Compatible with tube sizes from 1/8" to 1" (imperial); 3 mm to 25 mm (metric)

• Provides a visual reference for proper pull-up verification
• Assists with installation accuracy and traceability
• Compact, durable, and easy to use
• Helps detect loosening due to vibration or system stress
• Enhances quality control during and after assembly
• Ideal for inspectors and technicians in critical applications
Connection A size:
16mm

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