... malfunction;6.It's head part adopts open type and bolt bar type, It is handy and solid and can rotate ... 7ton 13mm 3kg 16,25,35,50,70,95,120 bolt typeQZD-240A 16-240mm2 10ton 16mm 4.5kg 16,25 ... ,35,50,70,95,120,150,185,240 bolt typeQZD-300A 16-300mm2 10ton 16mm 5kg 16,25,35 ...