Designed for superior performance permitting easy interchange of tools from one drive size to another. Oiled Black Oxide finish
| Part Number | Class | Drive | Nut End Configuration | Description | Attachment Type | Finish | Overall Length | External Nom. Size Drive Square Size |
|---|---|---|---|---|---|---|---|---|
| 3899 | Impact | 3/8"Dr | 4 Pt | 3/8" F x 1/2" M | Adaptor | Black Oxide | 1-3/8" | 1/2" |