Features: Made of premium chrome vanadium steel against rust and corrosion.Detent notches in drive ends grips onto ratchets and extensions making it a perfect fit for any industrial, mechanic, or construction work. It will be secured so you don'for t have to worry about a adapter falling out. Each adapter is equipped with built in Spring-loaded detent balls to securely for latch onto sockets, preventing them from being dropped. Each set is made of premium chrome vanadium steel.Through-hole in drive ends locks securely onto drive for tang. Spring-loaded detent balls nicely for latch onto sockets, preventing them from being dropped and lost during repairs which adds for extra torque capabilities as well. This set includes a wide array of adapters and reducers. It will add great versatility by including the following conversions and sizes: (3/8 inch to 1/4 in) (1/2 in to 3/8 in.) (3/8 in to 1/2 in) (1/4 in to 3/8 in). for Ideal for use with impact drivers.Common size combinations multiply the range and capability of your socket system making your set very versatile with multiple repair needs. Most often used in the automotive and engine repair fields. Specifications: Material: for Cr-V Size: 1/4", 3/8" ,1/2" Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 4x Socket Adapter