Feature: 1. The long handle is made of aluminum alloy, and the blade head is ABS plastic, which is strong and durable, and very easy to use. 2. The length of the handle can be easily adjusted by simple twist, so it is suitable for fish tanks of various sizes. 3. The sharp blade helps you quickly clean the dirt in the tank without scratching your precious fish tank glass. 4. Comes with 10 replaceable blades, easy to remove and replace. The blade protector can prevent accidental injury and extend the life of the blade. 5. Easy to clean, the scraper kit is very effective against algae and even stubborn coral lines. It can easily slide all dirt out of the glass tank and can be used as a gravel shovel with a protective cover. Specification: Item Type: Aquarium Algae Scraper Material: Aluminum Alloy + ABS Product Color: Black Product Weight: Approx. 114-136gPurpose: For fish tank cleaningHow to use: Remove the screw and tighten the screw to clamp the blade.. Package List: 1 x Extension Rod1 x Algae Scraper Pressure Plate1 x Knurled Handle1 x Algae Scraper 1 x Protective Cover10 x Blades1 x Screwdriver4 x Screw Note: Manual measurement, please allow 12cm/0.40.8in error.