Standard Diameter: 7/16" / .4375 InchesMetric Diameter: 11.1125mmGrade: 500Material: AISI 1010 Carbon SteelBall Weight (each): .200 Ounces / 5.6726 GramsCarbon steel balls are used in automotive applications, for semi-precision bearings, and in commercial applications such as casters, locks, and drawer slides. Other applications for carbon steel balls include locks, bicycles, roller skates, slides, trolleys and conveyors.