PROTO / Stanley Proto J7121 1/2″ Square Extension, 7/16″ Hex. Forged steel construction with brushed finish for durability. Drive: 1/2″ square male to 7/16″ hex female. Overall length approximately 2-3/4″ (manufacturer and listing length vary: 6.25″ listed in some specs). Features include ball detent, size stamped on tool for identification, precision-machined tips for proper fastener engagement, special heat treatment for long life, and one-piece construction to ensure concentricity. Compatible with 7/16″ and 1/2″ bits as noted. Package quantity: 1. Not for use on impact applications. UPC: 662679340155.
- Made in USA
- Not for use on impact applications
- Ball detent
- Size stamped on tool for easy identification
- Made of forged steel
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