2 Camera Lens Air Dust Blower Cleaner For Nikon SLR. This is a new set of 2 rubber watch crystal removers. Great for removing crystals from watches. They can also be used as a dust blower. Insert nozzle inside any watch stem hole and squeeze the bulb and it will blow out the crystal without damaging it. Just squeeze for a blast of air. Each measures approximately 4 1/2" (114 mm) long. We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.