Use your Slime Tube Patch Kit in the following 4 steps:

Take the metal scuffer and sand the leak area.

One side of the metal scuffer is very sharp. Be careful to hold the ball so that your fingers are away from the leak area or you could be cut.

Apply a thin layer of rubber cement to cover 1 centimeter wider in diameter than the leak area.

Place the appropriate sized patch over the whole leak area and gently press it onto the ball's surface.

Wait 1 hour for the adhesive to fully dry.