The Arrow Pneumatics 1/4 Super Quiet Flow Muffler SQF-2 is a set of 5 black mufflers designed for use with Arrow Pneumatics products. These mufflers are specifically compatible with the SQF-2 model and are made of durable material to effectively reduce noise levels. With dimensions of 7 inches in height, length, and width, these mufflers are a reliable and high-quality solution for controlling noise in industrial settings.