... two types: the preset type (NB) and the fixed-value type (NBD). ZhunDa NB-2000A series of mechanical torque wrench ... m to 2000N.m; 2. the head of the NB-2000A Series of Torque Wrench can be changed into ... the customer's need in packing, transportation and store; 6. it is convenient for you to operate, transport or ... ,50,55,60,65,70,75 Note: NB,NBD series and NB series of inch torque wrench can meet the ...