This Matco Tools Silver Eagle 3/8" Reversible Keyless Chuck Air Drill is a brand new tool that is perfect for any automotive project. The drill features a keyless chuck, which makes it easy to change bits without having to worry about losing or breaking chuck keys. Additionally, the drill's reversible feature allows for versatility in use, making it suitable for a variety of applications. The 3/8" chuck size is perfect for most drill bits and the manufacturer part number is SE144 3/8". This air drill is a great addition to any tool collection and is sure to make any job easier.