HANGERWORLD 20 Silver 37.5mm Metal Security Hotel Rings for Coat Clothes Garment Hangers Pack of 20 metal security hotel rings - anti theft attachment for hotel coat hangers. The chrome ring must be fitted by removing the wardrobe rail or dismantling the clothing rail. Ideal for hotels, night clubs, restaurants and retail outlets. Size: Diameter 37.5 mm. For rails which are already fixed, we offer our clip on Black plastic security rings. These are listed separately and once clipped in place can't be undone.