5pcs Step Drill Bit Set Hss Cobalt Multiple Cut Hole 50 Sizes Step Drill Case

100% brand new and high quality.
Cobalt Coated 5pc Step Bit SAE Cutting Holes Metal Aluminum Power Tool Drill Set
5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set W/ Aluminum Case
Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set
High Speed Steel Cobalt Coated Step Drill Sae Standard Sizes
5-Piece Step Drill Bit Set with Case, SAE
This set replaces 50 individual drill bits.
Two-flute design gives you faster, smoother cutting.
3-sided (TRI-FLAT) shank will not slip in your drill's chuck.
Cobalt coated for smoother cooler cutting.
Material:HSS
Shank: Triangle shank,Round Shank,Hex Shank,Hex Shank With a Step,Three Side Shank 
Quantity: 5PCS
Two flutes design, automatically deburrs as you drill
Tri-flat shank design for sure grip
Set complete with an aluminum storage case

Sizes:
#1: 3/16" to 1/2" 6 Steps (3/16'', 1/4'', 5/16", 3/8'', 7/16'', 1/2'')
#2: 1/8" to 1/2" 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'')
#3: 1/4" to 3/4'' 9 Steps (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4")
#4: 1/4" to 1-3/8"' 10 Steps (1/4'', 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8")
#5: 3/16" to 7/8" 12 Steps (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")

Three Pieces Stepped cone drill set manufactured from high speed steel,resulting in long tool life and extra durability,Each Step Produces specificsized,parallel holes,with the maximum material thickness being determined by the length of step.The drills are capable of producing or enlarging holes in sheet metals without the need for centre punch or pilot holes,and are designed for use with power tools or pedestal drilling machines for an extensive range of indestrial applications.

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