Design: handle for long using The distance between handle the knob been adjusted several for more comfortable 1-handed operations 1 Handed: Our foam allows you to adjust the rate and dispense foam with 1 hand, making your work more efficient NonStick PTFE Coating: The expanding foam is cover with nonstick PTFE, easy to clean and foam from spilling Use: Our foam dispensing for sealing, Fillings, and insulating small gaps in door and window, bathtubs, air conditioning hole, and more User-Friendly: Before using, please read the operating manual carefully Also, remember to release air and foam pressure for first use and any maintenance, and clean foam immediately after every use, Manufacturer: Beimus