Custom Tool Box Cover by Dmarrco, fits Snap-On Krsc242 Series, 36 in W 6 Drawers. Dmarrco Toolbox Cover. Dmarrco's custom toolbox covers SKU SM3A60-20 series are made in the USA with a durable water repellent 600 Denier Polyester fabric, two sturdy nylon zippers on the front sides for easy access unit magnets located on each side and top giving you the freedom to leave the cover on the toolbox without having to remove it.