

🛠️ Elevate your toolkit with precision and power — don’t get left behind!
The Proto Stanley J7121 1/2-Inch Square Extension with 7/16-Inch Hex is a compact, forged steel tool accessory designed for durability and precision. Featuring a ball detent for secure fastening and size stamping for easy identification, this USA-made extension is ideal for professionals seeking reliable, high-quality tool performance.



| Manufacturer | Stanley Proto |
| Part Number | J7121 |
| Product Dimensions | 2.54 x 2.54 x 2.54 cm; 68.04 g |
| Item model number | J7121 |
| Size | Оnе Расk |
| Colour | Multi |
| Style | Classic |
| Finish | Brushed |
| Material | Alloy Steel |
| Pattern | Solid |
| Shape | Rectangular |
| Power Source | ac |
| Item Package Quantity | 1 |
| Number of Pieces | 1 |
| Head Style | Fixed Square, Hex |
| Number of handles | 1 |
| Measurement System | Inch |
| Compatible fastener range | 0.5 inches |
| Included Components | 1/2" Square Extension 7/16" Hex |
| Batteries included? | No |
| Batteries Required? | No |
| Item Weight | 68 g |
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