An nozzle tip capable of securely and unremovably locking after temporary fixing at a tip-end of a discharging portion of a mixing tip is provided. The nozzle tip includes an insertion portion having a cylindrical portion for temporary fixing, a taper portion, and a cylindrical portion for engaging. The cylindrical portion for temporary fixing has the same outer diameter as an inner diameter of a protrusion portion of the mixing tip. The taper portion is continuously provided on the cylindrical portion for temporary fixing and has a step portion. The cylindrical portion for engaging is continuously provided on the step portion of the taper portion and has an outer diameter which is equal to the diameter of the taper portion at the step portion and a length longer than a length of the protrusion portion of the mixing tip.
