lifehackchallenge 
Best results for 3-cone drill
Qibaok Step Drill Bit Set with Automatic Center Punch, 3 PCS HSS Titanium Hex Shank Step Cone Drill Bits for Plastic, Wood, Aluminum, Metal Sheet, Metric 4-12/4-20/4-32mm
$16.99
$19.37
Amazon.com
Last update was on: May 4, 2024 5:19 am
- ????【Material】 HSS 4241 & classic high speed steel with titanium coating for strength and longevity.
- ????【Package】 3-Piece HSS Groove Step Drill Bit (4-12/ 4-20/ 4-32mm ) + 1 Automatic Center Punch.
- ????【Easy Drilling】 Two-fluted design provides faster, smoother cutting, provided with small pressure and the sets. Stepped grooves prevent slippage in the chuck.
- ????【Wide Usages】 Perfect Step Drill Bits for home DIY and general building supervision / engineering use. Ideal used to drill holes in various material like iron plate, aluminum plate, wood, PVC sheet, insulation boards, etc.
3 Pcs Large HSS Steel Step Cone Drill Titanium Bit Set Hole 4-12/20/32mm dint
$14.11
$17.78
Amazon.com
Last update was on: May 4, 2024 5:19 am
- .Automatically Deburrs Holes as you Drill. Two-flute Design Gives You Faster, Smoother Cutting.
- Titanium Nitride Coating for Cooler Running, can effectively extend the service life of the drill
- Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy,PVC
- Material : High speed steel .Long life !
- 3 sided shanks prevent slippage when in shank
Uber Workshop – 3 Piece Step Drill Bit Set with Pouch – Impact Driver Compatible – 28 Sizes
$9.30
$10.32
Amazon.com
Last update was on: May 4, 2024 5:19 am
- Set comes with 3 different bits
- Impact driver compatible - 1/4 hex shank - quick release
- Dual fluted design for better chip removal and smoother finishing
- Compact storage pouch keeps bits together and helps protect them from damage when not in use
- Bit #1 = 1/4-3/4 (9 steps) bit #2 = 1/8-1/2 (13 steps) bit #3 = 3/16 - 1/2 (6 steps)
Forney 60027 Mounted Grinding Point with 1/4-Inch Shank, 1-1/8-Inch-by-3/4-Inch
$5.68
$6.65
Amazon.com
Last update was on: May 4, 2024 5:19 am
- This are easy to use
- This are highly durable
- This is manufactured in China
- Shank mounted points and grinding wheels are made from durable high grade 60 grit aluminum oxide
- Perfect for grinding, polishing or deburring ferrous metals
- Use with 1/4-Inch chuck for high speed drills
DEWALT DWA1790IR 3-Piece IMPACT READY Step Drill Bit Set
ATOPLEE 16-30.5 & 5-20 & 3-14 HSS Taper Power Drill Bit Umbrella Step Drill Set Cone Chamfer Cutter 3 in 1
Electop 5 Inch & 3 Inch Drill Buffing Sponge Pads Car Foam Woolen Polishing Pads Kit for Car Buffer Polisher Sanding Waxing Sealing Glaze 16 PCS(12 Pads+2 Drill Adapters+2 Suction Cups)
$14.99
$20.84
Amazon.com
Last update was on: May 4, 2024 5:19 am
- Package Includes: 4pcs 3inch Sponge Polishing Pads, 4pcs 5inch Sponge Polishing Pads, 2pcs 3"Woolen Buffer Pads, 2pcs 5"Woolen Buffer Pads, 2pcs Drill Adapter, 2pcs Suction Cup.
- Application: Used for all kinds of coat paints's waxing, polishing and sealing glaze, to clean and improve their lightness
- And for auto car detail polishing. Adhesive backing, you can change pads just in seconds.
- High quality wool pad, sponge pad, bendable, washable and reusable. Different colored sponges have different softness, you can choose as you need, suitable for polishing rough and small areas.
Mary Paxton 3Pack Cone Car Wheel Hub Drill Buffing Sponge Pads Kit,Auto Cone Metal Polishing Foam Pad Set Buffing Polishing Pad for Automotive Car Wheels Care Buffing Tool
$11.98
$17.25
Amazon.com
Last update was on: May 4, 2024 5:19 am
- Turn your power drill into versatile polishing tool for cars, boats & motorcycles
- Unique cone-shape great for wheels, fenders, bumpers & other hard to reach spots
- Choose from 3 levels of stiffness: Yellow T80 Fine, Orange T60 Medium, Blue T40 Coarse
- 1/4" x 1" steel shank fits power drills, die grinders. Use with wax or polish for brilliant shine
- The price is for 3 pack, different colors, reasonable price to buy, welcome~
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 Lovers
$21.88
$30.41
Amazon.com
Last update was on: May 4, 2024 5:19 am
- 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).
QWORK 3 Pcs Titanium Step Drill Bit Set, High Speed Steel, 1/8" – 3/4" Total 28 Sizes, HSS Multiple Hole Drilling Cutting with Storage Bag
$10.99
$14.18
Amazon.com
Last update was on: May 4, 2024 5:19 am
- 1) 3 standard SAE step drill bits can drill 28 different size of holes on different thickness of materials. 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(detailed hole size and drill depth of each drill bit please check in Product description below)
- 2) Made of high quality high speed steel that is hard and sharp enough to drill through wood, plastic, steel and sheet metal
Senrob 5 Pcs Step Drill Bit Set with Automatic Center Punch& Aluminum Case, High Speed Steel Titanium Cobalt Bits for Metal
$21.99
$28.37
Amazon.com
Last update was on: May 4, 2024 5:19 am
- Package Includes: 5 x step drill bits，1 x automatic center punch，1 x aluminum case
- Wide Applications: 50 hole size choices to cut through iron, aluminum, PV and insulating plate as well as other types plates easily
- Durable Materials: ability of oxidation resistance, no rust and wear, long service life with titanium and cobalt plating coating
- Unique Shape: straight grooved is for excellent heat dissipation and chip removal, v-type opening design ensures cutting faster and smoother
Augshy 31 Pcs Car Foam Drill Polishing Pad Kit, 3 Inch Buffing Pads,Sponge Set Kit M10 Drill Adapter Car Polisher
$16.99
$21.07
Amazon.com
Last update was on: May 4, 2024 5:19 am
- You will get 25pcs 3" Sponge Polishing Pads（3 styles）, 2pcs Woolen Buffer Pads, 2pcs Drill Adapters, 2pcs Suction Cups.
- Different colored sponges have different softness, you can choose as you need, suitable for polishing rough and small areas.
- Used for all kinds of coat paints's waxing, polishing and sealing glaze, to clean and improve their lightness
- Also used for auto car detail polishing.Adhesive backing, you can change pads just in seconds.
HYCLAT Titanium Step Drill Bit Set & Automatic Center Punch – High Speed Metal Steel Drill Double Cutting Blades, Hss Cobalt Multiple Hole 50 Sizes, with Aluminum Case
$21.99
$32.55
Amazon.com
Last update was on: May 4, 2024 5:19 am
- 5pcs step drill bit IN 50 SIZES - each one step drill bit can drill several bore diameters. It's can work as 50pcs twist drill bits. You do not 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
- its has a deeply knurled surface for nonslip control
- protective aluminum case makes the drills not easy to dull.
