Irwin Unibit 3-Piece Set Step Drill Bit Set IWAS15504DF

Irwin Unibit 3-Piece Set Step Drill Bit Set (3/16-in to 7/8-in)

• SET INCLUDES One #1 single-flute step drill bit, one #4 single-flute step drill bit, one #4 double-flute step drill bit
• REDUCED SLIPPING Shank design helps to prevents slipping in drill chuck
• FASTER DRILLING #4 double-flute IRWIN Unibit only versus #4 single-flute IRWIN Unibit, average of first 10 holes in 1008 Steel

IRWIN Unibit Step Drill Bits are ideal for drilling holes into thin materials such as stainless steel or sheet metal. The 3 piece set includes 2 of the most common IRWIN Unibit Step Drill Bits along with the new double-flute design #4 Unibit that offers 2X FASTER DRILLING. DRILL THROUGH A VARIETY OF MATERIALS Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates VERSATILE DESIGN FOR PRECISE HOLES For drilling holes from 1/8-in to 7/8-in in diameter (3.2mm to 22.2mm). #1 has 13 steps 1/8-in to 1/2-in (3.2mm to 12.7mm) #4 has 12 steps 3/16-in to 7/8-in (4.7mm to 22.2mm) SET INCLUDES One #1 single-flute step drill bit, one #4 single-flute step drill bit, one #4 double-flute step drill bit REDUCED SLIPPING Shank design helps to prevents slipping in drill chuck FASTER DRILLING #4 double-flute IRWIN Unibit only versus #4 single-flute IRWIN Unibit, average of first 10 holes in 1008 Steel