NEIKO 10169A Step Drill Bit Set and Automatic Center Punch | 5 Piece, 41 SAE Sizes Total, 1/8” – 1-3/8” | Titanium High Speed Steel Unibit, Stepper Cone Drill Bit | Two Flute Step Down Bits

The NEIKO 10169A Step Up Drill Bit and Aluminum Center Punch set is your all in one drill bit set, drill a range of different sizes with a single bit. Looking to expand holes or drill into metal, this drillbit in the shape of a cone has multiple sizes in one. Conical shaped bit that allows you to drill a variety of hole sizes without needing to change between bits. The tip of the drill bit drills the smallest hole and as you step or drill further down the diameter increases as you drill.1pc of 1/4" Shank: 6 steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2")1pc of 1/4" Shank: 13 steps (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")1pc of 3/8" Shank: 10 steps (1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8")1pc of 3/8" Shank: 12 steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")1pc Automatic Spring Loaded Center Punch1 Blow Mold Carrying Case

• HSS STEP BIT: Classic stepdrill bit constructed of high-speed steel with titanium coating for drilling holes in plastic, aluminum, copper, stainless steel, and many other types of sheet metal. Also doubles as a hole expander.
• TWO FLUTE & TRI SHANK: Two-flute design deburrs during drilling, clearing chips faster and allowing particles to escape for clean cut holes. Each step drill bit features a tri-flatted shank for a secure fit into power tool chucks, eliminating slip.
• SPRING LOADED CENTER PUNCH: Our 5-inch automatic spring punch tool is a great tool for working with materials like wood, plastic, metal, and leather. Centering tool is spring loaded with an adjustable cap that accommodates any project.
• INCLUDES: Four multipurpose drill bit in 1/4-inch shank and 3/8-inch shank with automotive center punch and a red blow mold carrying case for easy convince and storage.
• MULTIPLE HOLE DRILL BIT: 4 stepper bits included. 1 x 6 step bit (1/4” shank; 3/16” - 1/2”), 1 x 13 step bit (1/4” shank; 1/8” – 1/2"), 1 x 10 step bit (3/8” shank; 1/4” – 1-3/8”), and 1 x 12 step bit (3/8” shank; 3/16” – 7/8”)