A convenient four armed chuck key suitable for use on many electric or cordless drills and bench mounted power tools that are fitted with a keyed chuck of 10 or 13mm capacity.

Fits most common 10 & 13mm capacity chucks
Key size: 10 gear teeth, pilot hole 5.2mm
Key size: 10 gear teeth, pilot hole 6.8mm
Key size: 11 gear teeth, pilot hole 5.8mm
Key size: 11 gear teeth, pilot hole 5.8mm