3/8" Air Ratchet Wrench, 30 ft-lb Torque, 300 RPM. The 1105MAX Series is our top-of-the-line, premium mini impact wrenches. These air ratchets offer best-in-class power and speed with features like enhanced corrosion resistance and an ultra-comfortable housing. Increased Access & Reach: These mini ratchet wrenches let you get into deep, tight, and hard-to-reach places. Long-Lasting Comfort: The composite housing and handle insulates from the cold and ensures operator comfort even during extended use. Trusted Durability: The 1105MAX Series can withstand harsh environments and repeated drops.