* Bits made of S2 alloy steel for superior hardness and great rust resistant.* Chrome vanadium steel socket for high strength and superior torque.* Notched drive ends fit any 3/8-inch drive ratchet or extension, preventing them from falling off.* It features a radius corner design, causing the socket to grab the sturdy wall of the fastener instead of grabbing the corners, resulting in less wear on the fastener.* Wide application in DIY hand-making, household maintenance, and most general repairs.Specifications:* Size: FD4 (4mm)* Drive Size: 3/8-inch* Total Length: 49mm / 2-inch* Bit Material: S2 Steel* Socket Material: Chrome Vanadium Steel* Finish: Roasted Red, Chrome Plated* HRC: 58-62Package Content:* 1 x Slotted Bit Socket.
eBay