Description:E-clips, also known as "e-rings," are used to secure parts onto a shaft. They fit into grooves in the side of the shaft for a snug fit. E-clips come in different types depending on specific application needs.Specifications:Outer Dia.:9mm/0.35inch;Inner Dia. : 3.9mm/0.15inch;Thickness (t): 0.6mm/0.02inch;Material: Carbon SteelColor: Black Package Includes:100 Pcs x E-Clip