This chuck key tightens the jaws of the 3/8 in. capacity chuck (48-66-0240), (48-66-0805) and (48-66-0806_. Key holder (48-66-4040) should be used to attach this chuck key to the collet's.
| Competitor Name | Competitor Part Number |
|---|---|
| Berkshire eSupply | PD5048663080 |
| MSC | 58773318 |
| Grainger | 2Y341 |