... . 2.suites for M12,M16,M20 Bolts. Tension Control Bolts Hand WrenchFeatures:It is good to use in small space,the handle ... ,easy to take.And it can be rotate 180 degree.What is more,its light weight,easy use,suitting for M12,M16 ... :3/4";5/8";1/2"weight:1.9kg Tension Control Bolts Hand Wrench