Descriptions:* Made of S2 alloy steel, withstand high torque and do not twist, protecting both the bit and the fastener. * Notched drive ends fit any 1/2-inch drive ratchet or extension, preventing them from falling off.* Wide used in DIY hand-making, household maintenance, and most general repairs. Specifications:* HRC:58* Size: T25* Drive Size: 1/2-inch* Bit Length: 62mm / 2.44-inch* Total Length: 100mm / 4-inch* Color: Brass Tone, Silver Tone* Material: S2 Steel Package Content: * 1 x Torx Bit Sockets