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DYKEM® Cross-Check™ provides a convenient visual method for identification of vibratory loosening or tampering in nuts, bolts, fasteners, and assemblies. Provides warranty protection against tampering. Marks will be easily broken if parts are tampered with or become loose. Highly visible under ambient light and fluorescent under UV light. Excellent adhesion to metal and other substrates.

• Tamper Proof Torque Mark
• Safe for most surfaces
• Excellent adhesion
• Visually detects loose nuts & bolts