Details:

• 3M™ E-A-R™ UltraFit Metal Detectable Earplugs.
• Earplugs feature an implanted stainless steel ball bearing for high detectability.
• Cord type: Metal detectable cord
• Premolded, triple-flange earplug design for comfortable fit
• Poly bag keeps earplugs clean and accessible for re-use 
• Single size fits comfortably in most ear canals
• Push-to-fit earplugs allow easy hygienic insertion without rolling
• Noise Reduction Rating (NRR): 25 dB. CSA Class AL
• Colour: Blue
• Box of 100 pairs of ear plugs