Proto Hex Shank Extensions, 3/8″ (male square), 7/16″ (male hex) drive, 2 3/4″, J7111, 662679330231
Proto® Hex Shank Extensions
Product Specifications:
- One-piece buildion ensures concentricity
- Special heat treat ensures long life
- Precision machined tips for proper fastener engagement
Technical specs
- Drive Size (Nom): 3/8″ (male square); 7/16″ (male hex)
- Finish: Nickel Chrome
- Locking Type: Pin
- Material: Alloy Steel
- Overall Length (Nom): 2 3/4″
- Weight: 0.14 lb





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