Description
Proto J7121 falls under socket adapters & extensions and is made of alloy steel. Overall length 2-3/4 in; finish Nickel Chrome; drive size 1/2 in (Male Square), 7/16 in (Male Hex). Proto lists 2-3/4 inch overall length in alloy steel with a nickel chrome finish; 1/2 inch male square drive to 7/16 inch male hex drive; Pin-locking connection for secure attachment; One-piece construction with precision-machined tips for proper fastener engagement.
Proto J7121 specifications
| Item | Proto data |
|---|---|
| Part number | J7121 |
| Material | Alloy Steel |
| Overall Length | 2-3/4 in |
| Finish | Nickel Chrome |
| Drive Size | 1/2 in (Male Square); 7/16 in (Male Hex) |
| Locking Type | Pin |
| Length | 2.7 in |
| Width | .6 in |
| Height | .7 in |
| Weight | 0.18 lb |
Source: Proto published product data.
Proto's hex shank extension converts a 1/2 inch square drive to a 7/16 inch hex drive with 2-3/4 inches of added reach for tight-clearance fastening.
- 2-3/4 inch overall length in alloy steel with a nickel chrome finish
- 1/2 inch male square drive to 7/16 inch male hex drive
- Pin-locking connection for secure attachment
- One-piece construction with precision-machined tips for proper fastener engagement
Built for mechanics who need extended reach and long service life from heat-treated tool steel. Manufacturer item number: J7121. Sold individually.
