3-Piece Step Bit Set, Hex Shank: 1/4", Step Sizes (3 Bits): 1/8, 5/32, 3/16, 7/32, 1/4, 9/32, 5/16, 11/32, 3/8, 13/32, 7/16, 15/32, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, and 7/8.
- Diameter: 9/32 in
- Diameter: 7/32 in
- Diameter: 13/32 in
- Diameter: 3/4 in
- Diameter: 5/32 in
- Diameter: 1/2 in
- Diameter: 7/16 in
- Diameter: 3/16 in
- Diameter: 9/16 in
- Diameter: 5/8 in
- Diameter: 11/32 in
- Diameter: 13/16 in
- Diameter: 1/4 in
- Diameter: 3/8 in
- Diameter: 11/16 in
- Diameter: 5/16 in
- Diameter: 1/8 in
- Diameter: 15/32 in
- Diameter: 7/8 in
- Diameter: 3/8 in