Strongbank Ultra Secure Site Box. The absolute ultimate in security - nothing on the market compares to it, Constructed using 5 & 3mm steel with every vulnerable area is strengthened, Features the unique Internal Anti-jemmy System, Thieves are never successful with this brand, Guaranteed to provide years of security for all types tools & equipment, Ultra-robust 5-lever deadlocks on both sides and anti-cut rollers in deadbolt, Robust chubb style keys supplied, Welded-on serial numbers for overnight key replacements, Gas struts on all sizes for easy opening & closing, Continuous heavy-duty, fully-welded hinge, Internal lid support stay, Castors available to suit