SuperEight® Hard Hat, 8 Point Ratchet, Gray no checkout High quality Grade R single line High quality Grade R single line welding hoses Grade R welding hoses are designed for carrying acetylene or oxygen to welding equipment Green hose carries oxygen to welding equipment Red hose carries acetylene Hose cover resists oils tool free blade changes Safe and easy to use Squeeze lever activates blade and releasing the lever hides the blade Dissipates force on impact by reducing it to smaller increments and spreading it over a greater area The exclusive smooth crown design contains a technically advanced suspension with eight load bearing points to stabilize and balance the hat or cap during everyday wear