3 pc Step Drill Bit Set • High speed steel with titanium finish • Drill multiple sizes with each bit • 28 hole sizes in 3 bits: -Bit one: 13 sizes from 1/8Ó to 1/2Ó -Bit two: 6 sizes from 3/16Ó to 1/2Ó -Bit three: 9 sizes from 1/4Ó to 3/4Ó