There are ventilation holes behind the panel. Shrink treatment, non-slip brushed. A single root is about 34cm long, about 2mm in diameter, one set contains about 100 Scope of application: grilled fish, grilled meat, grilled vegetables, grilled shrimp and crab, grilled corn, Grilled tofu, grilled pizza, grilled chicken wings, grilled potatoes and other ingredients you like Steel material, a set of slightly pointed ingredients for easy skewers. Save effort and convenience. (Because of its thinness, pay attention to safety during use, keep it away from children and avoid accidental injury when playing) Can be used repeatedly. Easy to clean and resistant to high temperatures. All kinds of ingredients can be skewered, environmentally friendly When using, put the skewered ingredients on the grill and turn them over. Send a signal tube, after use, storage and storage is more convenient