The Arm & Hammer AH7100NEC Gear Head Vent Clip Air Freshener in New Car scent comes in a 2 pack. This gel form air freshener is designed for use in cars and is suitable for vent installation. Made of plastic and featuring a colorful red design, it is an effective odor eliminator with a diffuser feature. The Arm & Hammer brand is known for its quality household supplies, making this car vent clip a reliable choice for freshening up your vehicle. Each container is a plastic bottle, and the product does not require any power source for operation.