Providing optimum power, the ARB twin motor design delivers class-leading airflow for fast inflation purposes. Constructed of lightweight, high-strength engineering-grade materials, it incorporates quality components for quiet operation and extended durability. The twin motors incorporate internal thermal protection against extreme temperature damage while a heavy-duty in-line maxi fuse for each motor provides professional circuit protection.  Designed for inflating Tires and air locker activation when used in conjunction with optional accessories. Suitable for many air tools when used in conjunction with a 4L air tank (optional with onboard models). 100% duty cycle. Sealed for moisture and dust resistance. Hard anodized cylinder bores for reduced friction. Teflon impregnated carbon fiber piston seals for a maximum trouble-free life. anodized mounting bracket dissipates heat. Integrated pressure switch, relays, and IP55 (waterproof/dustproof) brushless fan. cool electronics, motors, and cylinder heads. Over-pressure safety valve equipped. 12V.