12pcs Pet Playpen Panels are made of powder coated metal for rust resistance, square tube guarantees rigidity to withstand the weight of pet 12 detachable panels for freely changing the shape of fence into rectangle or hexagon No tools needed, insert rods for panel connection; Detachable design for storage & transportation Features round corners for protecting your pet from impact; 2 latches for double security 12 large panels to create an ample and safe space (about 30 square feet) for pets to stay