The Armorgard Tuffbank Site Chests feature a heavy duty 3mm thick lid. They are fitted with ultra-robust 5-lever deadlocks with anti-drill plates on both sides and anti-cut rollers in the deadbolt. Robust Chubb style keys are supplied. Extra reinforcing around locks prevents drilling. The serial numbers are welded on for overnight key replacements. Gas struts make for easy opening and closing with a continuous heavy duty, fully welded hinge and internal lid support stay.