Looks the same on the outside as the Classic Mini-Bak, but inside is a heavy duty spring with enough pull for carrying multiple ID cards or heavier proximity cards. Cord Length of heavy duty spring version is 24".
1-1/4" in diameter, Strap End Fitting, Standard Slide Clip, Dark Grey with no trim.
A label with your custom imprint can be affixed to the reels. The round case style fits a 3/4” diameter label. The square case fits a 13/16” x 13/16” square label. Choose a standard label or the lustrous domed label
more info about Imprints On retractable Reels (Standard)