双头开口扳手 meaning in Chinese

double open end wrech
double open end wrench
doubleopen end wrech
open-end spanner of double type

Assembly tools for screws and nuts - double - headed open - ended engineers ' wrenches - length of wrenches and thickness of the heads
螺钉和螺母用装配工具.工程用双头开口扳手.扳手长度和端口厚度
Assembly tools for screws and nuts - double - headed open - ended wrenches , double - headed ring wrenches and combination wrenches - maximum widths of heads
螺钉和螺母装配工具.双头开口扳手双头环形扳手和组合扳手.最大头部宽度