A shielding shell (30) of a male housing (10M) and a shielding shell (30) of a female housing (10F) have the same shape, touching portions (35) of the shielding shells (30) are such that outer touching pieces (32) having contact points at the inner sides and inner touching pieces (31) having contact points at the outer sides are arranged in circumferential direction, and the inner touching pieces (31) of one shielding shell (30) and the outer touching pieces (32) of the other shielding shell (30) correspond to and come into contacting with each other in radial directions. Since the shielding shell (30) of the male housing (10M) and that of the female housing (10F) have the same shape, cost can be reduced.