1. medcial area use; 2.ranges: 0.2N.m to 6N.m; 3. accuracy class:+/-6%. 1) They have the features of preset value, slipping alarm function, long time using and adjusting with the customers' needs. 2) It is a special-used tool for the instruments, meters, machines, electricity, equipments, home appliances etc. 3) NQY series are mainly used in medical industry. NQY series of screwdriver