It is used in body piercing parts,include:ears,tongue,breasts,eyebrows,lip,navel etc.It has the shapes barbell and banana barbell,each end has a ball or a spike. Spec:Radian(m/m):63.,8.0,9.5(3/8),10,11.1(7/10),12,12.7(1/2),14,16,19(3/4),22.25(7/8),25.4(1)--38.1(3/2) Pole(m/m):0.8,1.0,1.2,1.6,2.0,2.5--9.5Ball or Spike(m/m): ?.0,?.5,?.0?.0,?.0,?.0,?.0,?0.0Material:316L,316LVN,317L,Titanium(TC2,TC4)etc surgical steel