A wiper holder to which a wiper is attached has an attachment surface including a positioning boss configured to position the wiper by being passed through a positioning hole in the wiper, a positioning protrusion configured to position a first edge of the wiper, and a swage boss configured to receive a second edge of the wiper. The first edge of the wiper contacts the positioning protrusion to position the first edge of the wiper and the wiper is secured to the wiper holder by the swage boss being swaged while the positioning boss is passed through the positioning hole in the wiper and the second edge of the wiper being received by the swage boss.