Reviews Step Burnishing Drill

IRWIN Unibit 502T Step Drill Bit Set with Nylon Pouch Titanium Nitride Coated 3pc 15502

This IRWIN Unibit step drill bits feature single-flute cutting edges for greater control through steps.
These IRWIN Unibit step drill bits have a hex shank to help prevent slipping in the drill chuck.
IRWIN Unibit step drill bits use a nonskid, self-starting tip to minimize skidding and center punching.
Titanium Nitride coating is heat- and friction-resistant for extended cutting edge life.

Titanium Coating: Classic construction with titanium coating for capability and durability. The cutting edge is hardened and honed for sharpness, chatter-free design with staggered cutting teeth ensure the precise counter sinking and hole smooth clean..
The sway is small: you can open a beautiful aperture without using the center punch. No need to use the center punch, it is not easy to break. On-site construction, a variety of specifications for a step drill..
Unique step structure: one drill can open a variety of sizes and sizes, and one step drills to a box of drill bits.It is possible to deburr, chamfer, open hole expansion, and the function that the twist drill cannot be completed..
Use tools: pistol drill, bench drill. When the water is cooled while working, it can effectively extend the service life of the drill bit. The recommended drilling speed is 250-400 rpm..
Use: Dedicated to shovel walls, and suitable for drilling of ordinary stones, concrete, brick walls, etc..

✯ [PREMIUM MATERIAL]- 5 PCS rotary drill bit set made of premium high-speed steel material with surface treatment, tough, sharp and durable, ensuring long service life.
✯ [5 HEAD SHAPES]-5 different cutter shapes- Ball, Oval, Cylinder, Large and Small cone are included in the package to satisfy your various needs.
✯ [GREAT FOR WOODWORKING AND WOOD CARVING]- Used for grinding, polishing, shaping, reaming and burnishing soft wood, plastics and rubber surfaces. Ideal rotary file burr set for DIY woodworking job..
✯ [NOTE]- This rotary set works well for soft wood. Don’t apply them to hardwood or metal..

Applicable Plates: Burr free reaming, suitable for stainless steel, carbon steel, iron plate, aluminum plate, plastic plate, etc..
4Pcs Drilling Tools: Including 3pcs step drill bit and a center punch, commonly used for woodworking grooving, drilling and cutting, etc..
Universal Shank: With universal shank type, can be installed on lithium electric drills, hand drills, bench drills and other equipment..
High Speed Steel: These drill bits are made of excellent high speed steel, with HRC58‑65 hardness, wear resistant and durable..
Multiple Specifications: The step drill can be used to drill holes of different specifications without changing the drill bit, which is convenient and practical..

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..

Rotary Rasp Burr Set Wood Plastic Carving File Rasp Shank Drill Bits.
Length: 58mm, top diameter 12mm, top length 25mm, shank length 29mm, shank diameter 1/4 " 6mm.
Made of A-36 steel material, through fire dipped black surface treatment, sharper, Durable.
Used for grinding, polishing, shaping and burnishing wood, plastics and rubber surfaces. DIY woodworking polished artifact..

The step drill bit are made of high speed steel, strong and durable, fit for drilling holes in stainless steel sheet, aluminum alloy, plastic material and wood(the board must be smaller in thickness than the height of step drill bits, thickness not exceed 0.12 inch/3mm)..
The Titanium coating resists the drill bits from corrosion and rust, deduces friction making it easily to do multiple drills on surfaces such as plastic, aluminum, copper, stainless steel, and other types of sheet metal..
The step drill bit set includes five standard step drill bits that can replace 50 individual drill bits and process 50 different kinds of diameter holes,meet various drilling hole requirements..
X-shape cutting blades design enables a faster and smoother cutting.1/4 "or 3/8" rods are compatible with most electric drilling tools, suitable for Home DIY, and General Building/Engineering Use..
Satisfaction guaranteed! Try any product we sell for a full 30 days. If not completely satisfied, return it to us for a no-hassle refund or credit..

REPLACES 28 DRILL BITS: This set includes three standard SAE step drill bits that replace 28 individual drill bits.
TITANIUM COATED STRENGTH: Made of high speed 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.

✅【M35 Cobalt Superhard High Speed Steel】: ISI M35/1.3243/SKH55/M35 steel is a kind of high speed steel containing cobalt, which has the characteristics of high wear resistance, high pressure resistance and sintering resistance..
✅【100 extra-long warranty period】：if you have any questions about the product, please contact us and we will answer you within 12 hours. If the hexagonal handle breaks, refund or replace for 100% ..
✅【M35 step drill compatibility 】： step drills can quickly and smoothly drill holes of different diameters, such as stainless steel, aluminum, wood, plastic board (the board must be thinner than the height of the step drill).
✅【M35 four spiral groove】: step drill four cutting blade design. Faster, smoother cutting and easier separation of sawdust..
✅【Common sizes】: drill bits contain sizes from 1/4” to 1-3/8. Common sizes 7/8”, 1-2/16”, 1-3/8, minimum size 1/4, maximum size 1-3/8, total 19 sizes.