Ring spanner refers to both ends of the ring for the flower is a real life is easy to see. The side rotating bolt part and a handle part is staggered. The utility model has the advantages that the structure is convenient to disassemble the bolts and nuts assembled in the concave space, and can provide the operating gap for the fingers to prevent abrasion. In addition to tightening and similar operations, you can use the plum wrench bolt or nut to apply a large torque. Wrench with various sizes, when used to select with nuts or bolts, the same wrench.
 

 In the use of spanner, left hand push and hold wrench with bolt connection, keep wrench with bolt fully fitted to prevent slippage, the right hand holding the other end wrench and afterburner. The utility model has the advantages that the head of the bolt and the nut can be completely enclosed, so the bolt angle can not be damaged, and the large moment can be applied.