Unique patented three-flange design. Detectable by metal detectors; both ear tip and cord. Longer handle facilitates easier insertion. Made from soft and durable material. One size fits most ear canals. 3M™ E-A-R™ Tracer Pre-Molded Earplug TR-01-000 offers the same features as 3M™ E-A-R™ UltraFit™ Earplugs, but with the added feature of being metal detectable. Additionally, these are available in the single color, blue, and come with a metal detectable vinyl cord, making them ideal for the food production industry. Suitable for all applications. Reusable. Metal detectable. Affusol not required. Food Industry 94dB (A) - 105dB (A) 32dB 94dB (A) - 105dB (A) Pre-molded earplugs in a box. Short-term/intermittent noise exposure. Metal detection with food processing. Food Industry 32dB 2 red dots 94dB (A) - 105dB (A). 50 pairs/box