1. COMOWARE Step Drill Bit Set & Automatic Center Punch- Unibit, Titanium Coated, Double Cutting Blades, High Speed Steel, Short Length Drill Bits Set of 5 pcs, Total 50 Sizes with Aluminum Case
HSS Titanium Coating – High speed steel along with titanium coating ensures outstanding durability and sharpness, can reduces the friction, runs cooler.
Meet Your Demands – With the step drill bits we offered, you can process different kinds of diameter holes, which greatly saves you a lot of trouble.Great for metal/wood/plastic countersunk. Suitable for Home DIY, and General Building/Engineering Use.
Design – The split point tip is at 118 degrees to increase the wear resistance. The two flute design provides a smoother cutting, allows the material particles escape easily for a much more clean drilling operation.
Easy Organizing – A drill bits holder with size index is included in the metal kit for easy storage and organizing without fear of it falling out.
Set Includes – The drill bits set includes five common sizes for versatility, can fit the majority of brands currently on the market.
2. Neiko 10197A Titanium Step Drill Bit Set, High Speed Steel | 5-Piece Set | Total 50 Sizes
REPLACES 28 DRILL BITS: This set includes three standard SAE step drill bits that replace 28 individual drill bits
TITANIUM COATED STRENGTH: Made of super strong M2 steel with titanium coating for added durability and bit life
SMOOTH DRILLING ACTION: Two-flute design provides faster, smoother cutting without walking and a tri-flat shank ensure a firm grip
A COMPLETE SAE SET: Comes with one 3/16-inch to 1/2-inch six-step bit, 1/4-inch to 3/4-inch nine-step bit, and 1/8-inch to 1/2-inch 13-step bit
CUTS AND DEBURRS: Cuts through steel, sheet metal and other surfaces with only a small amount of pressure and deburrs as you drill
4. KSEIBI Step Drill Bit Set 5 Pieces Pack High Speed Steel Black Oxide M2 Multiple Hole 50 Sizes 1/8- 1-3/8 inch SAE Standard Drill Attachment (KS-575105)
These HSS Double-Fluted Step bit kit provide faster cutting and drilling than single flute bits. The easy-to-read step markings and targets save time when drilling holes.
Drills clean, accurate large holes in these materials (up to 1-3/8in. diameter) hard sheet metal, ducts, steel, stainless steel, copper, brass, aluminum, plastic, plexiglass, wood, firewood, veneers, vinyl siding, acrylic, plasterboard, PVC pipe, , fiberglass and cast iron, Ideal for electrical, plumbing and HVAC contractors.
M2 high speed steel along with the black coating ensures extreme durability, will stay new and shiny for years to come. Different sized shanks ensure compatibility with 3-Flat Hex Shank – Prevents bit from slipping in the chuck while drilling holes 1/4, 3/8 and 1/2 in. chuck size.
Step drill bit can be used on electrical drill, cordless drill, or high impact drill press machine, combo set with durable ABS plastic organizer for easy and safe storage in your tool box.
Dual-flute design provides greater speed and control and optimized for cordless drills driver running at high speed
5. Klein Tools KTSB15 Step Drill Bit #15 Double Fluted 7/8 to 1-3/8-Inch with Easy-to-Read Step Markings and Targets, 3/8-Inch Hex Shank
3-piece step drill set Ideal for drilling metal up to 1/8″ thick
Laser marked size for easy identification
Non-Skid self starting tip eliminates need for hole punch
7. CO-Z Step Drill Bits, HSS 5PCS Titanium Step Drill Bit Set, 50 Sizes in 5 High Speed Steel Unibit Drill Bits Set for Sheet Metal with Aluminum Case, Multiple Hole Stepped Up Bits for DIY Lovers33
Extreme Durabikity: Cobalt high speed steel drill bits along with the titanium coating ensures extreme durability, will stay new and shiny for years to come.
Different Sizes of Holes Can Be Drilled: Different sized shanks ensure compatibility with 1/4, 3/8 and 1/2 in. chuck sizes. You are capable to drill holes in different sizes which can meet your normal needs.
Smooth Drilling: Non-walking drill tip provides fast and smooth drills on steel sheets, aluminum sheets, wood board, plastic board etc. (the board must be smaller in thickness than the height of step drill bits).
Use Center Punch to Mark the Spot: Please mark the spot that you are to drill for easier drilling and improved drill bits life.
Keep Your Step Drill Bits Well Organized: All the bits come in a well-organized case for easy transport and storage.
