International series collars have metric outer diameter and width dimensions.
3750", OD 24mm, Acetal Tightly controlled face to bore perpendicularity is maintained (TIR of .Ruland clamp style shaft collars do not mar the shaft, are infinitely adjustable, and have superior holding power when compared to set screw collars. This one-piece international series shaft collar has a 0.3750" bore, 24mm OD, and 9mm width.