Uxcell M7 Impact Spline Bit Socket, 3/8" Square Drive 60mm Length CR-MO Metric Sizes 2 Pack

Forged with chromium-molybdenum steel material, surface heat treatment, high strength and durability.
To prevent rust and corrosion, the black phosphate finish absorbs and retains oil, repelling moisture.
The through-hole in the drive end locks onto the tang of impact wrenches or drivers so it won't fall off or stick on fastener heads.
It has a radius corner design, causing the socket to grasp the sturdy wall of the fastener instead of the corners, thereby reducing the wear of the fastener.
Widely used in DIY hand-making, household maintenance, and most general repairs.