How To Use?
Step1: Mark The Drill Position And Aimthe Center Punch To The Centerpoint.
Step2:Use The Automatic Center Punchto Mark The Work Piece With A Dimpleand Create A Starting Point.
Step3:Vertically Drill Theholeaccording To The Fixedpoint.
Product Features:

1、118° X-type Split Point - Increases cutting speed with self-centering and prevents walking.
2、Two-flute Design - a faster and smoother cutting, allows particles escape easily.
3、Tri-flatted shank will not spin inside the chunk, compatible with different types of drill machines effectively.
Specification:

#5 Bit：1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8"
#4 Bit：3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"
#3 Bit：1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4"
#2 Bit：3/16", 1/4", 5/16", 3/8", 7/16", 1/2"
#1 Bit：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"
NOTE: Keeping bits cool with a flow of cooling water when drilling will help to last the sharpness and durability.