This square-notched trowel is a core tool for professional tile installation. It features a stainless steel blade paired with an ergonomic non-slip handle, ensuring durability and comfortable grip. The blade edge is designed with uniform square notches, which can precisely spread tile adhesive or cement mortar on walls or floors to form a consistent textured layer, effectively enhancing tile adhesion and preventing hollowing or displacement. It is suitable for the installation of various tiles and stones, as well as wall plastering and leveling, making it an efficient helper for both professional tilers and DIY enthusiasts.