[Good Quality]The hex drill bits are made of S2 steel with a excellent finish fit rust prevention with clear size marks & strong magnetic tips.All drill bits have extremely high durability. [Work Great]Precisely locked without wobble in all your drivers.'t damaging the screws and screwdriver head. [Bits Size]The square drive bits set includes 18 hex head Hex wrench bits with square drive, featuring six bits of each size for 1, 2, 3 [Easier to Use & Less Room]It is easier to use than the Hex wrench that comes with furniture.Takes up less room in your tool box than a traditional 'L' shaped set. [Widely Used]1/4inch hex driver bits are suitable for electric screwdriver, hand screwdriver, electric drills. perfect for working on car, bicycle and furniture. Color: Silver Material: steel Package Contents: 6 x Drill Bits 6 x SQ2 Drill Bits 6 x SQ3 Drill Bits Only the above package content, other products are not included. Note: Light reflection 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.