Mobile Site Security Box. The new multi-functional site security solution Designed particularly for contractors working during fit-out stages of construction the BARROBOX has the benefit of mobility – featuring wind-up wheels. Using the internal winding handle; you are able to convert the BARROBOX from static to mobile within seconds!; Wind the wheels down and you have a mobile site box; Wind the wheels up and you have a secure static traditional site box. BARROBOX gives you complete peace of mind – allowing you to keep your tools beside you at all times