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Full polish finish resists chipping and rust
Box end is countersunk for easy application to the fastener
Spline design was created for use with specialty spline bolts which are used when weight and size of bolt heads must be minimized
The high contact surface area which is away from fastener points enables turning of highly rounded fasteners
Made in the United States
Stanley Proto 11-piece Full Polish Combination Reversible Ratcheting Wrench Set - Spline. Spline design was created for use with specialty spline bolts which are used when weight and size of bolt heads must be minimized. The high contact surface area which is away from fastener points enables turning of highly rounded fasteners.