Qanvee small NaNo-Q is the perfect tool for a clear view into the aquarium. The black scraper is made of an aluminium-magnesium alloy and is therefore free from corrosion. The holder can be assembled easily using the threads provided. After use, the scraper can effortlessly be taken apart again for storage. The blades can be replaced quickly with the help of the included hex key. Each package contains 10 of the blades that can be used on both sides.