: Made of stainless steel . Round and glossy surface , anti - rust , anti - corrosion , solid construction Strong load bearing capacity , sturdy and durable . For chains , ropes etc . to prevent knotting after rotation . Double Ended Swivel Eye Hook Suitable for swings , hanging chairs , hammocks , tire swings , punch bags , sports rope fitness ropes or any entangled and twisted ropes , suitable for indoor and outdoor use . Specification : Type : Double Ended Swivel Eye Hook Size : M6 / M8 Material : 304 Stainless Steel Package Includes : 2pcs M6 Double Ended Swivel Eye Hook 2pcs M8 Double Ended Swivel Eye Hook Note : Due to the light and screen difference , the item &# 39 ; s color may be slightly different from the pictures . Please allow 1 - 3mm differences due to manual measurement .