The 3M Speedglas 9100 Series Hard Hat Adapter is outfitted with attachments that mount the 3M Speedglas Welding Helmet 9100 and 9100 FX to a hard hat, which helps provide head protection to industrial workers. Designed from durable yet lightweight materials, with all necessary hardware for installation included, the hard hat adapter can be easily integrated with the hard hat.Helps meet job requirements This lightweight adapter attaches the 3M Speedglas Welding Helmet 9100 and 9100 FX to most hard hats, helping to provide head protection for welders. Adjustable design This safety gear for welding helmets is designed to be lightweight yet durable. Easy-to-connect parts and an adjustable design enable quick mounting once the welding helmet is attached.