Can be used with optional castors. Tuffbank High Security Boxes & Chests Built to a very high specification featuring the unique Internal Anti-jemmy System, which is guaranteed to baffle thieves!, Extremely strong, sturdy and secure but also very cost effective, Defeated thieves time and time again, Heavy duty construction with 3mm lid, Ultra robust 5 Lever deadlocks with anti-drill plates on both sides and anti-cut rollers in deadbolt, strong chubb style keys supplied, Extra reinforcing around locks to prevent drilling, Welded on serial numbers for overnight key replacements, Gas struts on all sizes to assist with lid opening and closing. Continuous heavy duty fully welded hinge, Internal lid support stay.