Salisbury SK40 SPL 40 cal/cm2Arc Flash Protection Kit With Jacket and Bib Overalls. Now includes SPL true color sheild in hoodThese kits meet NFPA 70E hazard risk category (HRC) 4. All are rated to 40 cal/cm2. Choose from the standard materials or the lightweight versions, which are 10% lighter than the standard making your job more comfortable. Kit includes an arc flash coat, bib overalls, Pro-Hood™, hard hat, safety glasses, and carrying bag.