By eliminating the counterbore on the box end, the wrench achieves a larger contact area with bolts and nuts.
This design improves torque transmission while minimizing the risk of rounding or damaging fastener heads.
透過取消梅花端的沉孔設計，與螺栓和螺帽的接觸面積得以擴大，
不僅提升了扭力傳遞效率，同時也減少對螺栓與螺帽頭部造成損傷的風險。