Optrel 5011.180 Hard Hat Adapter – Allows Welding Helmet to Fit Safety Hard Hats

Optrel Universal Hard Hat Adapter – Part No. 5011.180. Genuine Optrel Part Number: 5011.180. Hard hat must fit well & securely. Adapter Kit Only - No Welding Mask or Hard Hat. Ergonomic design reduces neck strain.

eBay