An adjustable wrench advantage is: on the basis of not increasing wrench parts on the relaxation of the six angle wrench for fastening or square bolt head and nut size range, convenient processing, the basic processing cost does not increase.

Insulation movable spanner is not available to the large size of the wrench to tighten the smaller size of the screw, it will because of the excessive torque and the broken screw; according to screw hexagonal head or nut hexagonal edge size adjustment opening, not the gap is too large, otherwise it will damage the bolt head or nut, and is easy to slip, causing injury accidents; should let the jaw is fixed by the main force, to pull the handle to the tension direction operator, don't push out. Insulation spanner handle end can not arbitrarily connected with a long, should not be wrench when hammering tool use, damage insulation tool use function.

Insulation spanner and the application range is wide, you can adjust the opening size and specifications for 8 inch, 10 inch and 12 inch, the insulation performance is reliable, the third party testing standards of quality products. The handle is red, anti off ring, insulation material made of composite material imported from abroad, good hand feeling when in use and is an indispensable tool for electrical work.