BLACKROBOT 4 Piece Impact Socket Adapter Set, 1/4" 3/8" 1/2" SAE Drive Socket Adapter Set, Square Adapter and Reducer Conversion Set for Impact Driver Wrench, Cr-Mo Steel

PRACTICAL ADAPTER SET: This set includes the most practical 4 sizes, 2 reducers: 1/2"F to 3/8"M, 3/8"F to 1/4" M, 2 adapters: 1/4"F to 3/8"M, 3/8"F to 1/2"M. Clear laser marking on surface, easy to identify and manage, HIGH QUALITY CR-MO MATERIAL: Made of heat-treated forged Chrome Molybdenum (Cr-Mo) Steel material, which has can reduce corrosion and has ultra-high hardness. Thicker walled design can bear higher torque generated by impact tools and prevent breaking, PREMIUM COATING: Our socket adapter set has black manganese phosphate coating on surface, which is better than the traditional black oxide coating adopted by others. Black manganese phosphate coating is a quality corrosion resistance and rust resistance function, reduces friction with other fasteners and ensures maximum durability, SRING BALL DETENT: This impact adapter set is equipped with spring ball detent, which can tightly connect with socket and preven falling, ensures smooth usage and safety in use, QUALITY: Our product meets ANSI standardand and can give you the best use experience