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Its a folding protective cover of drill.
It make possible to prevent user from bursting out during drilling.
Thanks to the high light transmission rate of plastic protective cover and the circle-broad perspective-cover，user can focus on drilling without afraid the room full of dust.
In addition，the folding cover can collect the scraps.
The design also adjust to upwards slope inclined drilling operations.
You just regulate the folding cover right.We can ensure that the functions which is enumerated before can be effective .
We just rotate connection of the red circle, and remove it after finishing the work .
WuXi City, China
Guoxi Li Dilong He Tong Yu Yichi Zhang