This E-clip works with 20 mm shaft diameter, its free inner diameter is 18.5 mm, free outer diameter is 40 mm, and thickness is 1.5 mm. This E-clip is made of 304 Stainless Steel in GB /T 894.1-1986 standard.
Specs:
To Fit Shaft Diameter: 20 mm Inner Diameter (d): 18.5 mm Outer Diameter (dc): 40 mm Thickness (h): 1.5 mm Material: 304 Stainless Steel Material Standard: GB /T 894.1-1986