yueton 5 Pairs Men Unisex Stainless Steel Small Hoop Earrings Ear Stud Material: Stainless Steel. Color:Black,Gold,Silver,Blue,Multicolor, 1 pair for each color Its special design will make you look unique. It is a good gift for your lover,family,friend and coworkers pin diameter : 1mm/0.039"(approx.); about 9x10mm/0.35*0.39" for the inside circle, 13mmx13mm/0.51*0.51" for the outside circle