1/2″ Drive Impact Hex Bits. Length of Bits: 3″. or negative. We maintain high standards of excellence. And you will receive it in one week. Includes Blow Mold Case for Storage. Sizes: 1/4″, 5/16″, 3/8″, 7/16″, 1/2″, 9/16″, 5/8″, 3/4″.