Estore 3pc Socket Adaptor Set 1/4 3/8 1/2 Inch Cordless Hex Drill Bit Stainless Steel Locking Ball Ensures Secure Fit. Sockets Snap-On Tightly & Won't Slip Off 1/4-inch Hex Shank Prevents Stripping During High Speed Drill Operation Super Strong Heat Treated Chrome Vanadium Steel for Normal & Impact Use - Sandblasted Finish Converts All Power Drills into Speedy Socket Drivers. Sizes Include: 1/2-inch, 3/8-inch, & 1/4-inch