Box end has built-in N-PowerFit Drive- Increased
strength and reduces rounding or fastener damage by
distributing stress through a gentle arc in the bore by
enlarging the contact surfaceBox end flat ground so
teeth reach edge of wrench vs beveled for 20% greater grip
strengthOpen end has reinforced teeth to prevent
cracking and breakingMachined to tightest dimensional
tolerance for best fit in the industryAngle rise of 15
degree for box endClear engraving- The
beautifully-refined engravings are easy to see and increase
the efficiency of work.Compact external diameter is
among smallest in the world and ideal for tight
spacesSet contents 10, 11, 12, 13, 14, 15, 16, 17, 18,
19mm
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