The Speedglas 100 magnifying lens holder is an accessory that allows users to be able to insert magnification plates into their Speedglas Welding Helmet 100 Series.Easily and securely attach a magnifying lens to your 3M Speedglas Welding Filter, with 3M Speedglas Magnifying Lens Holders. It enables you to attach magnifying lenses (sold separately) for a closer, clearer view of your weld. Our lens holder forms part of the complete helmet assembly for welding applications and is part of a range of Speedglas welding helmet accessories that help ensure your protection and comfort.