The Hot Box Whip Set is designed for use with Hot Box vaporizers. This is an Original Equipment Manufacturer (OEM) product, which means it is produced by Hot Box. It is identical to your original Hot Box Whip Set and is the perfect replacement kit. It has the same high quality and durability and is guaranteed to work like the original. Each Hot Box Whip Set includes 1 piece 4-foot Hot Box Vaporizer Whip, and three pieces Hot Box Replacement Mesh Screens. As much as possible, replace your whip every 3 to 5 months for continuous use.