Product Description The Speedglas Hardhat Adapter 06-0014-00NR helps attach the Speedglas 9100 Series welding helmets to your hardhat. All mounting hardware is included. No Hard Hat From the Manufacturer The Speedglas Hardhat Adapter 06-0014-00NR helps attach the Speedglas 9100 Series welding helmets to your hardhat. All mounting hardware is included.