Tamperproof Tube Marker, Blue Price For: Each Tip Style: Bullet Standards: Color conforms to HACCP for use in Food Processing and Handling. Base Material: Ink Actuation Type: Squeeze Tube Item: Tamperproof Tube Marker Tip Size: Medium Features: Paste Like Highly Visible Mark is Easy to See if Broken When Tampering Occurs, Fluorescent Color, Visually Detects Loose Nuts and Bolts, Excellent Adhesion, Safe for Most Surfaces NSF Certified: No Marker Type: Permanent Dry Time: Less Than 1 hr. Tip Material: Fiber Temp. Range: -20 Degrees to 600 Degrees F Color: Blue Country of Origin (subject to change): United States