Proto® 7 Piece Full Polish Double Box Wrench Set- Spline

Proto® 7 Piece Full Polish Double Box Wrench Set- Spline

  • Proto Spline Tools are designed to service high tensile strength fasteners used widely on military and commercial aircraft and in heavy machinery
  • applications where vibration is prevalent. They are also used in automotive and industrial areas where high performance torque needs to be achieved
  • Spline fasteners help tighten high strength bolts to high torque loads
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Additional Features

  • They help lower the force required to turn standard fasteners by allowing the torque load to be moved away from the corners, helping prevent fastener rounding. They also turn fasteners with damaged corners
  • Spline helps reduce foreign object debris (FOD) by having a precise fit between the fastening tool and its fastener
  • Full polish finish provides corrosion resistance and an easy to clean surface


Full Polish
Number of Pieces



Unfortunately, the warranty information cannot be retrieved for this specific product. Please review the information about our warranties.

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We take extensive measures to ensure all our products are made to the very highest standards and meet all relevant industry regulations.

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