Obstruction (half moon box) wrench made of chrome vanadium steel (chromium tool steel). Width across flats: 13x17mm Length: 190mm
Made of plastic, with 6 steel-blades. Size: 270x90mm
Made of Polysterene (PS) with a perforated tinplate pad. Sizes: 270x130, 380x160, 400x180 and 600x130mm