Product Description
Performance Tool W38421 | 3/8" Drive 21mm Deep-Well 6-Point Metric Socket
The Performance Tool W38421 is a 3/8" drive deep-well socket designed for 21mm metric fasteners with a 6-point contact pattern. This socket delivers reliable grip and reduced fastener rounding for precision work on metric-equipped vehicles and equipment.
Key Features
- 3/8" square drive for compatibility with standard ratchets and torque wrenches
- 21mm 6-point design grips fastener flats securely to prevent slipping
- Deep-well construction reaches fasteners in recessed or hard-to-access locations
- Metric sizing for European and import vehicle applications
Specifications
| Brand | Performance Tool |
| Part Number | W38421 |
| Weight | 0.16 lb |
| Dimensions (L × W × H) | 1.75 × 4.75 × 6 in |
| UPC | 039564384219 |
| Drive Size | 3/8 inch |
| Socket Size | 21mm |
| Point Type | 6-point |
⚠️ Prop 65 Warning
WARNING: This product can expose you to lead, nickel, and other chemicals, which are known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more information go to www.p65warnings.ca.gov.