3pcs Magnetic Bit Holder Extensions 75 100 150mm Change 1/4 inch Hex Shank A4T4
Magnetic Bit Holder Set Extensions 3" 4" 6" Quick Change 1/4" Hex Shank. High hardness, non-slip, large torque, long life and durable. The screwdriver head has strong magnetic so that it can self-lock the connecting rod.