Pattern and marble designs make this socket has the advantages of anti-slip, more durable, time-saving and labor-saving, and it is practical compatible it can turn a 1/2 inch impact wrench into a 1/4 inch hexagon shank, which provides you with more choices. Treated by electrophoresis technology, its surface is exquisite, and it has strong corrosion resistance, acid and alkali resistance, and due to the overall heat treatment, it also has a strong shock resistance. This socket is made of chrome vanadium alloy steel material. The length of the general socket is 38mm, of the telescopic socket is 50mm, and the width of the general socket is 23mm, of the telescopic socket is 22.8mm. It is suitable compatible the electric drill, electric wrench and so on. Item Name: Bit Conversion Socket Material:Chrome Vanadium Alloy Steel Size: S: 3.8cmx2.3cmx2.3cm/1.5inx0.91inx0.91in M: 5cmx2.28cmx2.28cm/1.97inx0.9inx0.9in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X General Socket or 1 X Telescopic Socket