Adding extra protection to your welding helmet has never been easier than with this adapter. It is compatible with any Miller product and most slotted hard hats. The Miller hard hat adapter gives you the option of easily attaching your welding helmet to a hard hat. Perfect for working on potentially dangerous job sites where you might catch more than heat, having a hard hat is essential for maximum safety while welding. Check our other listings as we have hard hats in our inventory as well.