Quality Materials: The hook is made of metal, offering excellent rust and resistance. The holder itself is made from high-quality plastic, ensuring durability and guaranteeing long-term use Maintain Cleanliness: The toilet cleaning tablet holder effectively prevents the tablets from direct contact with the inner wall of the tank, and residue caused by dissolved tablets, freeing you from tedious manual cleaning Easy to Use: Simply secure the hook onto the tablet holder and hang it of the toilet tank for quick installation. You can install it easily without other tools.