Hand tools with fixed or variable openings, used for tightening and loosening nuts and bolts, and for assembling and disassembling objects. 有固定或可变开口的手动工具，用于拧紧和松开螺母和螺栓，以及装配和拆卸物体。
2
socket set
套筒头子套件
Set made up of hollow cylinders of different sizes and interior profiles that fit onto a ratchet socket wrench. 由一套适合棘轮套筒扳手的内轮廓件和不同尺寸的空心圆柱体组成。
3
ratchet socket wrench
棘轮套筒扳手
Wrench fitted with a pawl and a ratchet: the pawl sets the direction of rotation, while the ratchet lets the handle turn in the opposite direction over the socket. 配有棘爪和棘轮的扳手：棘爪设定旋转方向，棘轮使手柄在套筒上反向旋转。
1
ratchet socket wrench
棘轮套筒扳手
Wrench fitted with a pawl and a ratchet: the pawl sets the direction of rotation, while the ratchet lets the handle turn in the opposite direction over the socket. 配有棘爪和棘轮的扳手：棘爪设定旋转方向，棘轮使手柄在套筒上反向旋转。
2
socket set
套筒头子套件
Set made up of hollow cylinders of different sizes and interior profiles that fit onto a ratchet socket wrench. 由一套适合棘轮套筒扳手的内轮廓件和不同尺寸的空心圆柱体组成。
3
wrenches [3]
扳手 〔3〕
Hand tools with fixed or variable openings, used for tightening and loosening nuts and bolts, and for assembling and disassembling objects. 有固定或可变开口的手动工具，用于拧紧和松开螺母和螺栓，以及装配和拆卸物体。
