1010/1020 Carbon Steel Sphere, Grade G1000, Mirror-Like Finish,  A29/C1010/C1020/ 11310 (CS1010), 3/32" Diameter, 0.001" Sphericity (Pack of 500) 1010/1020 carbon steel is a low-carbon steel that provides good formability and weldability Meets A29 and 11310 specifications Reflective finish provides a bright, mirror-like appearance Standard tolerance