The Black & Decker X66341 Chuck Key - 13mm is the perfect tool for the faster and easier changing of drill bits. This chuck key can fit a variety of chucks up to 13mm (1/2in). It allows easy tightening or loosening of the bits in your power tool. This key is suitable to use with the majority of branded keyed chuck power tools.
Suitable for up to 13mm chucks
Perfect for changing drill bits
Helps to tighten & loosen bits
Suitable for use with most keyed chucks