50 x 50 200mm long
                         space for the chain when bolted down is 42mm by 44mm 
                            All 3 Options Come With M10 X 95MM Through Bolts 
        And Shear Nuts The nuts are designed to shear off when a certain torque is achieved 
                                                      leaving only the conical part, 
                 making it almost impossible to remove and thus deterring vandals and thieves