About This HSS Titanium Coating: The step drill has excellent sharpness and durability due to its high speed steel material and titanium coating 118° Split Point Tip & Spiral Dual-flute Design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape more easily Set Includes: #1 Bit(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"; #2 Bit(6 steps): 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"; #4 Bit(12 steps): 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8" Widely Application: Ideal for drilling holes in plastic, aluminum, iron and many other types of sheet metal (Not recommended for stainless steel or any other harder metal) Equipped with a portable bag, make it more convenient for using and storing the step drills Overview Material : High Speed Steel (HSS) Cutting Diameter : 0.5 Inches Finish Type : Titanium Shank Type : Straight Cutting Angle String : 118 Degrees
