Mastercraft 4-Sided Chuck Key

The Mastercraft 4-Sided Chuck Key is constructed from durable carbon steel and is compatible with the vast majority of ¼”, ⅜”, ½”, and ⅝" drill chucks. This Mastercraft chuck key ensures that changing drill bits is a quick and easy process, and makes an ideal replacement for misplaced or damaged chuck keys. The key itself is constructed from #45 carbon steel, which provides it with increased durability even when compared to equivalent carbon steel keys. With the combination of extreme strength and the valuable ability to fit onto most common chucks, this adaptable chuck key makes a powerful choice for any compatible drill.