Used Iwata Revolution HP-TR1 Side Feed Dual Action Trigger AirbrushUsed Iwata Revolution HP TR1 Side Feed Dual Action Trigger Airbrush Used but in good condition. Tested, cleaned, and inspected, ready to go! HP TR1 Side Feed Dual Action Trigger Airbrush is a versatile and reliable airbrush that delivers outstanding performance. With its unique and comfortable handle, this airbrush provides effortless coverage and quality atomization at low air pressures, making it an excellent choice for general purpose spraying.