Outer tube material: outer nylon+stainless steel inner tube Material of inner tube: 1.3mm thick stainless steel. Bearing capacity: 150kg Preparation before installation (self-provided): 1. Impact drill (impact drill is required for solid walls, and other drills can be used for other walls) 2. Impact drill (impact drill must be used for solid walls and glass drill for ceramic tiles) 3: Cross screwdriver 4: Tape measure 5: Level meter 6: marker pen fix 1. Confirm the installation according to the user's situation. 2. Mark the good hole position with a tape measure. 3. Drill installation holes at the marked positions (the height can be confirmed by drilling one first), and drill bits: 12 large. 4: Knock the expansion screw sleeve into the hole. 5: Install the fixing screws on the wall (confirm the installation position before punching) 6: Cover the decorative cover after installation.