![3M 340-4017 - The 3M E-A-R UltraFit corded earplugs features a proprietary, premolded, triple-flange design that fits comfortably in most ear canals. Metal-detectable ball bearing for high detectability. - Regular | Stauffer 3M 340-4017 - The 3M E-A-R UltraFit corded earplugs features a proprietary, premolded, triple-flange design that fits comfortably in most ear canals. Metal-detectable ball bearing for high detectability. - Regular | Stauffer](https://res.cloudinary.com/stauffer-glove-safety/image/upload/w_500,h_500,c_pad,b_auto,q_auto/Product/ear3404007.jpg)
3M 340-4017 - The 3M E-A-R UltraFit corded earplugs features a proprietary, premolded, triple-flange design that fits comfortably in most ear canals. Metal-detectable ball bearing for high detectability. - Regular | Stauffer
TR-01-000 | 3M E.A.R Tracers Series Blue Reusable Corded Ear Plugs, 29dB Rated, Metal Detectable, 50 Pairs | RS
![Photograph of the earplugs used in the study: Howard Leight Fusion®... | Download Scientific Diagram Photograph of the earplugs used in the study: Howard Leight Fusion®... | Download Scientific Diagram](https://www.researchgate.net/publication/233984484/figure/fig1/AS:300118969470976@1448565346453/Photograph-of-the-earplugs-used-in-the-study-Howard-Leight-FusionR-flanged-premolded.png)