Double end box wrench offset non sparking ReferenceAlloySize (S)Length (L)004605 BeCu 6*7 122 mmDouble end box wrench offset Beryllium copper 6*7 6*7 122 mm 019405 AlBr 6*7 122 mmDouble end box wrench offset Aluminium bronze 6*7 6*7 122 mm 004607 BeCu 7*9 126 mmDouble end box wrench offset Beryllium copper 7*9 7*9 126 mm 019407 AlBr 7*9 126 mmDouble end box wrench offset Aluminium bronze 7*9 7*9 126 mm 004609 BeCu 8*9 128 mmDouble end box wrench offset Beryllium copper 8*9 8*9 128 mm 019409 AlBr 8*9 128 mmDouble end box wrench offset Aluminium bronze 8*9 8*9 128 mm