Features Anti-stress key ring with a self-contained puzzle Simply get all three ball bearings into the centre at the same time Can be branded on the front and back Specifications Name Description Country of Origin China Colours White Dimensions Dia 58mm Materials Component Material Body Polystyrene (PS) Ring Iron Anti-stress key ring with a self-contained puzzleSimply get all three ball bearings into the centre at the same timeCan be branded on the front and backCountry of Origin: ChinaBody: Polystyrene (PS)Ring: Iron