Levers (30) are connected to a base end portion (13) of a male luer via a base (15). Each lever includes a locking portion (31) and an operating portion (35). A locking claw (32) protrudes from each locking portion toward the male luer. A lock ring (8) is provided opposing inner surfaces of the operating portions. The lock ring is movable between a first position at which the lock ring is located close to the base and a second position at which the lock ring is located away from the base. When the lock ring is at the first position, the levers are pivotable such that the locking claws move away from the male luer. When the lock ring is at the second position, the lock ring restricts the levers from pivoting such that the locking claws move away from the male luer.
