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

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”)