Name: non sparking striking box offset wrench Introduction: It is used for disassembling and fastening the large size six hexagon bolts and nuts Material: Be-Cu,Al-Cu,die forged products Size: 17,19,22,24,27,30,32,36,41,46,50,55,60,65,70,75,80,85,90,95,100,105,110,120,130,140,150 (mm)