[Versatile Application]: This screw kit includes 66pcs and composed of 10 different sizes of drills and extractors which makes it compatible with all kinds of drills and remove any type of screws and bolts. [Premium Quality]:It is made of quality high speed steel, high strengthen and durable, which ensures it is tough enough to easily remove those screws and make your work more efficiently. [Easy Operation]: Two simple steps to remove all stuck screws or bolts in a few seconds. Step One to choose a drill bit smaller than the screw, Step Two to use the same size extractor to take out reversely use your electric hand drills. [Warm Tips]: Using the eletric hand drill and in low speed when stripping the screw can avoid getting hurt. colour: gray Material: HSS Size: 2.32x0.59x0.59 inches Package Contents: 66 x Easy Out Stripped Screw Extractor Kit 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.