STEP DRILL BIT SET

This is a 5-piece step drill bit set made of HSS 4341. It includes a 4–12mm bit with 1mm steps, a 4–12mm bit with 2mm steps, a 6–18mm bit with 2mm steps, a 4–22mm bit with 2mm steps, and a 6–35mm bit with sizes 6, 8, 10, 13, 16, 19, 21, 23, 26, 29, 31, 33, and 35mm. The shanks are 1/4″ hex for the first four bits and 5/16″ hex for the 6–35mm bit. All bits are packed in a plastic box.