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How To: Conversion Kit, 455 Regulator for KM 37, KM 57, SL 17C or SL 27® Helmet Your browser does not support iframes, but you can visit <a href="https://player.vimeo.com/video/331331756?color=FDC600&title=0&byline=0&portrait=0"></a>
SuperLite® 17B Neck Clamp Area (Including Internal Chin Strap and Yoke) SuperLite® 17B Neck Clamp Area (Including Internal Chin Strap and Yoke)
