Retaining Ring External 1.5 mm Thk PK25 System of Measurement Metric Location Style External Thickness 1.5 mm Fits Shaft Diameter 28 mm For Bore Diameter Not Applicable Fits Groove Diameter 26.6 mm Fits Groove Width 1.6 mm Fits Groove Depth 0.7 mm Free Inside Diameter 25.9 mm Material Steel Finish Black Phosphate Material Grade/Class Ungraded Tensile Strength 150 000 psi Ring Type External Retaining Ring Material Quality Standards DIN 471 Manufacturer Location Made in USA