3pc Sae Titanium Step Uni Drill Bit Set (1/8"- 1/2"),(3/16"- 1/2"),(1/4"- 3/4") 3PC SAE TITANIUM STEP UNI DRILL BIT SET (1/8"- 1/2"),(3/16"- 1/2"),(1/4"- 3/4")