規格:
#1 適用螺絲釘 NO.4 ~ NO.7 螺栓NO.10(5mm)
#2 適用螺絲釘 NO.8 ~ NO.10 螺栓1/4-in(6mm)
#3 適用螺絲釘 NO.11~ NO.14 螺栓5/16-in(8mm)
#4 適用螺絲釘 NO.16 ~ NO.24 螺栓3/8-in(10mm)
材質:採用堅硬S2材質製造