Although the sewer lid is not so heavy that a crane had to be used to remove it, but want to open it with hand is no easy matter. The cover opener with magnetic force use of the magnet and the principle to achieve the objective of saves effort. If beforehand fix the magnet on the cover, and use of the cover opener which has been opened out to easily pry up the cover and move it. Moreover, the magnet has been design a switch to be able to load and unload cover easily.

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