pro 1139

STANLEY J1139 Box End Wrench Straight, Fixed Head, Non-Ratcheting, Double End 3/4 x 7/8 in, 12 Points, 13-1/8 in L

Available from Manufacturer
Manufacturer #:j1139


Full polish finish provides corrosion resistance and easy to clean surfaces. 12 point box end allows for fine indexing, helping to improve speed and access. Fits 4, 6 and 12 point fasteners. Box ends incorporate the TorquePlus™ system. Proto® TorquePlus™ wrenches are ideal for use on stubborn or damaged fasteners, and also on fasteners made from soft materials. The TorquePlus™ design is a high performance drive configuration which allows for quick and easy wrench engagement to the fastener flats, not the corners. The TorquePlus™ configuration employs a radius-corner design, shifting contact area and stress away from the fastener corners and distributing contact stresses over a large area of the box end, minimizing slippage. The TorquePlus™ internal design minimizes fastener rounding, helps to extend fastener life, and allows the user to more easily turn worn, rounded, or rusted fasteners.


Brand Name Proto Material Steel
Jaw Capacity 3/4 x 7/8 in Item Name Box End Wrench
Type Straight, Fixed Head, Non-Ratcheting, Double End Measuring System SAE
Offset Angle 15° Finish Full Polished Chrome
Number of Points 12 Tether Capable Yes
Length 13-1/8 in Standards ASME B107.100, AS954E S3.8.1
Weight 0.65 lb