The variable hexagonal box spanner is the synthesis of the manual screwspanner and the hexagonal box spanner.
可变六角套筒扳手则是对手动螺丝扳手和六角套筒扳手的综合。
2
The spanner is different, according to the structure may divide into two big kinds, namely manual screwspanner and box spanner.
扳手按照结构的不同主要可以分为两大类，即手动螺丝扳手和套筒扳手。
3
Convenience : The water chestnut of the screw can fit exactly into this special desighed spanner, which avoids the problem of slipping out as using the normal jack handles.