1.Screwdriver Holder: Suitable Bit with Handle Diameter 68mm Can hold screws of various shapes within the scope of application (Suitable for 6mm8mm diameter screwdrivers/bits; The range of clamping screws is 312mm; the diameter of the nut should be less than 12mm). 2.Screw Gripper: After We are committed to bringing customers a good shopping experience. If you have any questions about the product, you can contact our customer service, and we will do our to solve the problem for you. 3.Clamps For Woodworking: It is suitable for electric screwdriver and manual screwdriver, no more dropping screws while fastening. 4.Screw Clamper: Screw Fixing Gripper Improve Work Efficiency When installing screws, the process was very slow, because it was easy to install unevenly or crookedly. After having Screw Gripper, you will install the screws more easily and quickly, which saves effort.