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3M Peltor Optime II Ear Muffs, 30 dB, Helmet Mounted, H520P3A-410-GQ - Green : Amazon.co.uk: DIY & Tools
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3M PELTOR Optime II Earmuffs, 30 dB, Green, Helmet Mounted, H520P3E-410-GQ : Amazon.co.uk: DIY & Tools
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