SK11 Impact Socket, 1/2" Drive, 12.7mm, 21mm

High-durability 21mm impact socket with hexagonal internal design for highly efficient work.
Used only 1-2 times ?
Drive size: 12.7mm (1/2 inch).
Features knurling for a non-slip grip, making adjustments convenient ?
- Brand: SK11
- Model: SK11 21
- Size: 21mm
- Type: Impact Socket
- Internal Shape: Hexagonal

Thank you for looking.
Recommended for those who like KTC, Tone, Blue-Point, Snap-on, MAC TOOL ?