Proto 1/4" Drive Black Oxide Deep Socket 3/8" - 6 Point J4712LB-SBD

Proto's J4712LB-SBD is a professional-grade 1/4-inch drive SAE long socket designed for precision work in deep or recessed areas where standard sockets cannot reach. This 3/8-inch 6-point socket is engineered with the TorquePlus™ system, which allows for quick and easy engagement with fastener flats rather than corners. By shifting contact stress away from the corners, this tool minimizes slippage and rounding, making it highly effective for mechanical repairs in confined spaces. Constructed from high-strength alloy steel with a sleek black oxide finish, it is a primary choice for automotive technicians and industrial maintenance professionals who require reliable performance and extended reach on smaller fasteners.
Key Features
Extended deep-well design provides essential reach for fasteners located in recessed or obstructed areas.
High-performance 6-point configuration provides maximum surface contact for superior torque delivery on small fasteners.
Patented TorquePlus™ internal geometry protects fasteners from rounding and extends their service life by distributing stress over a larger area.
Manufactured from premium alloy steel to ensure maximum durability and resistance to structural failure under load.
Black oxide finish offers enhanced corrosion resistance and a non-reflective surface suitable for various industrial environments.
Standard 1/4-inch square drive is compatible with all standard small-scale ratchets, extensions, and nut drivers.
Features a precision product weight of 0.07 lbs, providing the necessary mass for an extended socket while remaining lightweight for fine work.
Precision-machined 3/8-inch opening ensures a secure and exact fit for critical fine-scale hardware.