Specifications: Outer Dia.: 10mm/0.39';Inner Dia.: 4.8mm/0.19';Thickness (t): 0.6mm/0.02' Material: Made of Carbon steel, Surface treatment: Blackening. providing good resistance to corrosion and high temperature. Features: The spring metal clip features 3 prongs that give it an E shape which fits in a groove on the metal shaft assembly. Application: These E-Clips are retaining rings that fit into a machined groove of a shaft to secure items. Application: E-Clip Circlip uses for appliance repairs, bearing, gears, pulleys, and various repair projects.