Ceiling Hook Chandalier Hook Heavy Duty Hook Black . Steel 4 Hole hook New weight 139 grams Approximate size 50x50 mm base height 55 mm (Not made from brittle cast iron) Condition is New. Dispatched with Royal Mail 2nd Class Letter Majority of wall hooks in the market are made using light zinc, aluminium or brittle cast iron that often have the tendency to snap under load. These investment-cast steel hooks are extremely robust and manufactured to take out the anxiety of hooks breaking during use.