The Best Cobalt Step Drill Bits of 2023

Cobalt high speed steel for extended cutting edge life makes it ideal for drilling stainless steel

Drills 12 different hole sizes, from 3/16" to 7/8" by 16ths

SpeedPoint tip prevents "walking," gets fast starts, and eliminates the need for pilot/starting hole

Single-flute cutting edge drills true round holes with smooth, clean finish

Durable & Sturdy W/Cobalt Added ----- Solid M35 molybdenum high speed construction with cobalt added for extra durability, close to impossible to snap compared conventional drill bits, the unique 3-sided shank prevents slip in drill chuck and reduces shocks; oiling the bits recommended before every use to maximize the service life.

Jam-Free Performance ----- Dual-flute design and three-sided shank design is optimized for cordless drills in high speed provides greater speed and control while minimizing steel scurf flying around, to lengthen service life, please do not set drilling speed at its maximum to avoid damage to the cutting edge.

One Bit for All ----- Every bit comes with 10 sizes so you can drill up to 10 holes with different diameters, saving you time and efforts to change bits, every package comes with 5 bits, that makes it 50 diameters in total.

Universal Compatibility ----- Designed for drilling on steel sheets up to 0.08 in., acrylic, PVC and wooden boards up to 0.2 in.; marked with obvious marks for easy and precise hole drilling, compatible with drills 1/4”,3/8”,1/2”

M35 cobalt step drill 3/8" (9.52mm) shank 9 hole 1/4" (6.35mm) to 3/4" (19.05mm)

9 hole sizes: 1/4" (6.35mm), 5/16" (7.94mm), 3/8" (9.52mm), 7/16" (11.11mm), 1/2" (12.7mm), 9/16" (14.29mm), 5/8" (15.88mm), 11/16" (17.46mm), 3/4" (19.05mm), with 1/16" (1.59mm) increments. 3/8 Inch Shank with 3 flats to eliminate slipping

Smooth cutting double-fluted design for true round hole; Self-starting for clean holes in thin materials

The step drill bit is made with M35 cobalt. It is ideal for variety of materials from stainless steel, metal, plastic, fiberglass to wood. They also help to enlarge existing holes. M35 HSSCo is a high speed steel alloy made up of 5% cobalt. M35 is similar to M2, but with 5% cobalt added.

The addition of cobalt increases heat resistance. It is widely used in metal manufacturing because of its ability to resist wear over conventional high speed steels, allowing for shorter cycle times in production environments due to higher cutting speeds or from the increase in time between tool changes. M35 is also less prone to chipping when used for interrupted cuts.

Premium M35 6% Cobalt Steel ,66-69 HRC (Rockwell Hardness Scale) ,Usually Give the Best Heat,Wear and Chip Resistance and Long Tool Life.

Grinding the Cutting Edge Three Times,with the High HRC and Heat Resistance of the Material,Desigh for Cutting through Stainless steel , Iron plate, Aluminum,Ducts,Wood,PVC and Plastic.

This Cobalt Step Drill Bit is Typically Capable of Running Two to Three Times Faster.Despite the Higher Price,the Cost Per Hole When Using Cobalt Drill Bit Will be the Lowest,Since It Can Produce So Many More Holes.

[4-32mm] 15 Steps (4mm,6mm,8mm,10mm,12mm,14mm,16mm,18mm,20mm,22mm,24mm,26mm,28mm,30mm,32mm)

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.

Drill bit is engineered with M-35-grade cobalt steel for maximum life when drilling in tough steel

SpeedPoint tip for fast starts

Drill bits feature a radial concave flute

IRWIN drill bits have laser-marked sizes for simple identification

Includes #1C, #2C and #3C bits

Drill bit is engineered with M-35-grade cobalt steel for maximum life when drilling in tough steel

SpeedPoint tip for fast starts

Drill bits feature a radial concave flute

IRWIN drill bits have laser-marked sizes for simple identification

Includes #1C, #2C and #3C bits

Work as step drill bit, cobalt drill bit set, step bit, step drill bits for metal, step drill, metal drill bits, step bits for metal, step drill bit set

Use as stepped drill bits, step bits, metric step drill bit, step drill bits, step drill bit set 5

Use for drill bit step, 2 inch step drill bit, step bit set, step drill set, stepper bit, step bit drill bit, stepped drill bit

Work for drill step bit, step up bit, cobalt step drill bit, hard metal drill bits, uni bit, step up drill bit

Suit for titanium step drill bit, step down bit, cobalt step bit, step bit for stainless steel, titanium step bit, multi drill bit, step drills

Hss & Titanium Coating ----- High-speed steel makes it last longer than others, titanium coating ensure easily cut through iron sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean.

Titanium Coating ----- Coated with titanium, this step drill set performs well in heat, corrosion and rust resistance.

Revolutionary Design ----- Tri-flatted shank fits into power tools chuck securely and eliminates slip; two-flute design clears chips faster and allows particles to escape easily.

Includes 10 STEP SIZES ----- 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8".

A Must-Have for Handyman or Professionals ----- Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron and many other types of sheet metal (excluding steel or any other harder metal).

Easily drills on iron sheets, stainless steel sheets, steel sheets as well as aluminum sheets.Revolutionary spiral flute design to minimize the flying metal ashes, making the drilling process as well as the hole significantly smoother.

You can use water to cooling it when it is work and it can be used for even longer.Universal Compatibility ----- Designed for drilling on steel sheets up to 0.08 in., acrylic, PVC and wooden boards up to 0.2 in.; marked with obvious marks for easy and precise hole drilling, compatible with drills

Solid M35 molybdenum high speed construction with cobalt added for extra durability, close to impossible to snap compared conventional drill bits, the unique 3-sided shank prevents slip in drill chuck and reduces shocks; oiling the bits recommended before every use to maximize the service life.

Suit for use in hardness under 28 artifacts,(Such as: Stainless steel , iron plate, aluminum, wood )No need of center punch.Compared with the ordinary twist drill,it is not easy to break and it can be used for deburring, chamfering and open hole on Wood metal plastic。

Material: M35(HSS-Co).Size :4-32mm,6-24mm,4-22mm,3-12mm,4-12mm

Dimensions: 5 pcs step drill bits enable 50 sizes - each step drill bit can drill several bore diameters. It can work as 50 pcs twist drill bits. You don't have to replace drill bit constantly with the step drill bits.

AUTOMATIC CENTER PUNCH - the center punch delivers an automatic, high-impact, spring-loaded strike-through adjusting the cap; it has a deeply knurled surface for nonslip control. The protective aluminum case makes the drills not easy to dull, Canvas Bag will more light and easy to carry, both of them would be shipped randomly.

TITANIUM HIGH-SPEED STEEL: Classic high-speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of the metal sheet.

DOUBLE CUTTING SIDES & THREE-SIDED HANDLE - Double cutting SIDES and X-type openings design ensure a faster and smoother drill; 3-sided handle design prevents slip in drill chuck can cut through the wood, sheet metal, steel, and other surfaces.

WHAT YOU GET - HYCLAT Step Drill, Automatic Center Punch, Aluminum Case or Canvas Bag, 24 months warranty - Ideal Gift for Father's Day, Perfect for DIY lover!