6 IN 1 SCREW SET

Fastening a screw is a simple operation but the harmony between a screw and tools is the most essential factor for perfect and smooth operations which require reliability any driver with a carefully calculated edge can be useless if it doesnot fit into a screw head pls select a exactly tool for your screw                                                    do not apply the tools to live-electric objects                                                                                                              do not use the tools instead of chise bar and lever