The Tork Craft chuck key or wrench is a tool that is made for the purpose of tightening or loosening the jaws of a chuck while the chuck is a type of clamp that is used to hold a cylinder object.
Application: For use in most small electric and cordless drills.
Features & Benefits: Fits most 13mm drills.
1/2in x 20 UNF thread.
Opening capacity: 13mm
All metal construction for durability.
Chuck key included .