Assembly tools for screws and nuts. Spiral ratchet screwdriver ends. Dimensions.
螺钉和螺母的装配工具 螺旋棘轮螺丝刀末端 尺寸
2004-07-09
UL Subject 7700-2-2
Outline of Investigation for Portable Pneumatic Tools; Part 2: Particular Requirements for Screwdrivers, Ratchets and Impact Wrenches (Outline, 7/29/2021)
便携式气动工具研究概述;第2部分:螺丝刀、棘轮和冲击扳手的特殊要求(大纲 7/29/2021)