Best Seller | Irwin Industrial Tools 3593506 T10 Insert Bit Set - 0.25 in. Common in automotive and computer industries. Ideal for high torque applications. Designed for quick easy change-out in production use. S2 tool steel construction with a Rockwell Hardness between 58-62 for strength and precise fit. The ideal... more | | $10.47 FREE shipping go to store |