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The DYKEM 91939 is a detergent-removable layout marker designed for marking metal, plastic, and other shop surfaces during fabrication, machining, and inspection workflows. The medium tip delivers a consistent line width suited for part layout, inspection marks, and temporary identification on workpieces. The red ink washes off cleanly with standard detergent and water, making it a practical choice when permanent marking is not required and surface cleanliness must be restored after inspection or processing.
This marker is used in machine shops, fabrication facilities, and light manufacturing environments where temporary marking is part of a standard quality or production process. It is well suited for HVAC sheet metal fabrication, plumbing rough-in layout, and general trade shop use where parts need clear, readable marks that do not require solvent removal. The 91939 is sold individually and is also available in case quantities.
Designed as a general-purpose detergent-removable marker for use on metal, plastic, and similar shop surfaces in fabrication and inspection applications.
No installation is required for this marker. Apply marks to clean, dry surfaces for best adhesion and readability. Allow ink to dry before handling marked workpieces to avoid smearing. Remove marks using standard detergent and water before applying coatings, adhesives, or permanent finishes.
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