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Compared with ordinary electric drills, firstly the electric screwdriver adds the "setting torque" function, that is, it will jump out if the torque exceeds a certain torque, so it will not blindly twist the screw hole. Secondly it adds the forward and reverse gears to loosen and tighten the screw. Besides, it has added with the low speed gear to be more suitable for screwing. If the torque is too small, the screw can't be twisted, and if the torque is too large, it is easy to damage the product and cause serious slippage. Therefore, it is best to buy an electric screwdriver with precise torque settings with appropriate maximum torque, and multiple gear adjustments.

Hydraulic crimping tool, also called hydraulic crimping pliers or crimper, is a hand-held hydraulic tool for crimping cables, lugs, terminals or connectors. This article will introduce the use methods for hydraulic crimping tool and the main points of daily maintenance.