Description
3pcs M7 HSS Step Drill Bit Set 3\/16-1\/2 1\/4-3\/4 3\/16-7\/8 Inch

Specifications: Material: HSS\/ High Speed Steel Shank Size: Tri-Flat Shank Flute: Dual Flute
Size Drilling Range(!#!amp!*!Phi; inch) Step Sizes Height(mm) Flute Length(mm) Height of Shank (mm) Shank Diameter(!#!amp!*!Phi; inch) 3\/16!#!amp!*!quot; - 1\/2!#!amp!*!quot; 3\/16，1\/4，5\/16，3\/8，7\/16，1\/2 6 60 35 25 6 1\/4!#!amp!*!quot; - 3\/4!#!amp!*!quot; 1\/4，5\/16，3\/8，7\/16，1\/2，9\/16，5\/8，11\/16，3\/4 9 73 48 9.5 3\/16!#!amp!*!quot; - 7\/8!#!amp!*!quot; 3\/16，1\/4，5\/16，3\/8，7\/16，1\/2，9\/16，5\/8，11\/16，3\/4，13\/16，7\/8 12 78 53 9.5
Quantity: 3pcs
Features: Hi-Molybdenum M7 HSS Steel 135 Split Point Prevents !#!amp!*!quot;Walking!#!amp!*!quot; Dual Flute Design Drills 17% Faster Automatically Deburrs for A Clean and Hole Tri-Flat Shank Prevents !#!amp!*!quot;Spinning!#!amp!*!quot; in the Chuck
No need for a pilot hole， can automatically deburr holes as you drill.
Drill Hog is proud to release the newest technology in step drill bits.
These bits are made from Molybdenum which has a melting point of 4，753 degrees Fahrenheit!
These bits will drill through the toughest steel like truck frames， stainless steel， farm implements， spring steel， grade-8 bolts， and more!

Package Included:
1x set (3pcs) HSS Step Drill Bits

More Details: