[Socket Adapter Material]-V and black phosphate . with heat treated chrome vanadium steel for superior strength, each adapter with black phosphate rust and . [Drill Bits Material]Our drill bits are made from S2 steel material in a beautiful black . Also each drill bit is labeled with it's imperial size.[10 Hex Hex-Wrench Drill Bits Size]About 5/64 inch, 3/32 inch, 7/64 inch, 1/8 inch, 9/64 inch, 5/32 inch, 3/16 inch, 7/32 inch, 1/4 inch, 5/16 inch. [Multi Purposes]This socket adapter set is designed to provide a securely locked in extension to your existing tool. Provides additional length to reach into a multitude of hard to reach spaces. The spring ball lock ensures a tight fit into the driver to prevent slipping during use. Specifically machined to fit securely into a hand held driver, drill driver or impact wrench. [Wide Application]105 degree right angle drill driver can be connected to the drill, rechargeable drill or manual wrench, extending their reach to inaccessible stenosis, twisting screws, nut. [Socket Adpater Application]Used in the installation of pneumatic screwdriver, electric screwdriver, pneumatic drill, manual screwdriver and other installation for the hexagonal tool. It is a good accessory for conversion. Colour: black + silver Material: metal Package Contents: 1 * 105 degree Screwdriver 3 * Socket Adapter 10 * Hex Hex-Wrench Drill Bits Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.