Made of premium high-carbon steel material with heat treatment, this impact socket tool set has heavy duty, serving you a long time. The sleeve is designed with slotted holes, which can be more firm and not easy to fall off, and can be better fixed on the machine with leather rings and pins. With clear specification markings and the equipped tool case, this impact socket tool set has easy identification. The chamfered design is specially used for the smoothest fastener clamping and quick alignment. Equipped with a practical sturdy storage box, this 1 or 2 impact socket tool helps keep every part in place. Colour:As Shown Material:steel Package Contents: 20 x 1 or 2Inch Drive Socket Set 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.