2-13mm Keyless Chuck Adaptor Conversion 1/4"Hex, SDS Plus, 1/2 Impact Heavy Duty. A keyless drill chuck is a type of drill chuck that doesn't require a separate key to tighten or loosen it. This chuck is compatible with Gen 1 Milwaukee M18 drills, but not compatible with Gen 2 and 3, which take 9/16-18 threaded chucks.
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