Maintenance matters of hand drill (1) The commutator of the motor should be specially maintained, and the conductive substances in the mica slot of the commutator should be cleaned up in time with a mica slot cleaning knife.(2) often add high temperature resistant grease, add an appropriate amount o Read More

1, the choice of drill head size: With the increase in the size of the drill head, the price will also increase, the size of the drill head for home use is generally 20mm will be sufficient.2, electric drill additional features to choose: the same model, there will be some additional features, for e Read More