Wrist Stretch Coil Band Key Ring (Rainbow) Color may vary (Check Description of Available Listings to Choose from Rainbow, Red, Green, Purple, Pink or Blue). 1 Inch (Outside Diameter) Bright Metal Split Ring for Keys Opaque or Translucent Plastic. ~7/16 Inch Wide Coils Wrist Band Stretch Coil is About 2 Inches in Diameter at Rest to 6+ Inches Stretched