Manufactured with a strong Black reinforced plastic casing: 28mm Diameter with metal clip.  Japanese made steel spring; stainless steel cord with protective plastic coating and extension to 60cm; pulling weight approx. 90g. Great for holding ID cards, keys (will hold 3 to 4 Yale type keys comfortably), and much more. Retractable string is 70cm in length.Badge Reel body size is 3cm Diameter by 0.8cm width.Available in a variety of colours.