Jiangsu Xingrui Precision Tools Co., Ltd.
| Payment Terms | L/C, D/P, T/T, Western Union |
| Supply Ability | 300,0000PCS PER MOUTH |
| Delivery Time | 30-45days |
| Packaging Details | metal box |
| Shank | Round/Three-flatted/Hex shank and so on |
| Process | Fully Ground |
| Use | Metal Drilling |
| Material | HSS-M35 |
| Packing | Aluminium case or as your request |
| Product name | 19PCS Drill Bit Set |
| Feature | Sharpness,High Speed.Straight Smooth Edge,Longer Working Life |
| Type | Twist Drill Bit |
| Color | amber color |
| Application | Drilling Holes,Stainless Steel,concrete etc. |
| Brand Name | XRTOOLS |
| Model Number | 19PC |
| Certification | ISO9000 |
| Place of Origin | CHINA |
View Detail Information
Explore similar products
29 Piece Twist Drill Bit Set – HSS M2, Black Gold Coated, Fractional Sizes 1/16
M35 Cobalt HSS Drill Bit Kit (21pcs) – 135° Split Point, Fractional Sizes with
29PC High Speed Steel Drill Bits (1/16–1/2 in) – Black & Gold, Three Flat Shank,
M35 Cobalt 21-Pc Drill Bits for Steel & Stainless – 135° Split Point, Jobber
Product Specification
| Payment Terms | L/C, D/P, T/T, Western Union | Supply Ability | 300,0000PCS PER MOUTH |
| Delivery Time | 30-45days | Packaging Details | metal box |
| Shank | Round/Three-flatted/Hex shank and so on | Process | Fully Ground |
| Use | Metal Drilling | Material | HSS-M35 |
| Packing | Aluminium case or as your request | Product name | 19PCS Drill Bit Set |
| Feature | Sharpness,High Speed.Straight Smooth Edge,Longer Working Life | Type | Twist Drill Bit |
| Color | amber color | Application | Drilling Holes,Stainless Steel,concrete etc. |
| Brand Name | XRTOOLS | Model Number | 19PC |
| Certification | ISO9000 | Place of Origin | CHINA |
| High Light | 19 Pc Drill Bit Set M35 ，19pcs heavy duty steel drill bits ，Heavy Duty twist drill hss | ||
Built for precision starts on tough materials, the XRTOOLS 19-piece M35 cobalt drill bit set features stepped-point tips that bite immediately, resist walking on curved or painted surfaces, and lower thrust at breakthrough. The M35 substrate (~5% cobalt) keeps cutting edges hard at elevated temperatures, while fully-ground twist flutes clear chips fast for cleaner, rounder holes. A heavy-duty metal index case with clear size callouts keeps the entire inch-fractional map organized.
Instant engagement: Stepped-point geometry pre-centers the bit and acts like a built-in pilot, reducing skidding and burr.
Hot-hard performance: M35 HSS-Co resists softening under heat—ideal for stainless, carbon and alloy steels, and cast iron.
Fewer change-outs: Durable edges + efficient chip evacuation extend life and reduce downtime.
Operator friendly: Lower feed force, smoother entry, and reduced chatter—great on hand drills and drill presses.
Shop-ready kit: Jobber length, round shank fits any 3-jaw chuck; labeled metal case speeds selection and inventory counts.
Stainless (304/316), carbon steel, alloy steel, cast iron, and non-ferrous (brass/bronze/aluminum). Perfect for fabrication & MRO, electrical/HVAC panel work, automotive upfits, fixtures, frames, and general workshop drilling.
Pro tip: On stainless, run lower RPM with cutting oil and peck on deep holes to control heat and chips.
| Feature | Details |
|---|---|
| Material | M35 Cobalt HSS (~5% Co), fully ground |
| Tip Geometry | Stepped-point with 135° split—self-centering, low thrust |
| Flutes | Precision-ground twist flutes, polished for chip flow |
| Length Type | Jobber |
| Shank | Round, 3-jaw chuck compatible |
| Finish | Bright ground or Gold |
| Count | 19 pieces |
| Case | Plastic index box, size-stamped wells |
| Resharpenable | Yes—maintain stepped-point/split geometry |
| Recommended Materials | Stainless, carbon & alloy steels, cast iron, non-ferrous metals |
| 1.0 | 1.5 | 2.0 | 2.5 | 3.0 |
|---|---|---|---|---|
| 3.5 | 4.0 | 4.5 | 5.0 | 5.5 |
| 6.0 | 6.5 | 7.0 | 7.5 | 8.0 |
| 8.5 | 9.0 | 9.5 | 10.0 | — |
Steel/stainless: Moderate surface speed, constant feed, cutting oil recommended; peck to manage heat.
Aluminum/brass: Higher speed; light oil improves finish.
Maintenance: Re-grind when lips dull; keep the step and split symmetric for self-centering.
Retail-ready metal index case (sleeved & barcoded); master cartons for distributors.
Private label/OEM: custom assortments (metric/imperial), finish options, laser-etched logo, bilingual EN/RU labels.
Q1: How is a stepped-point different from a standard split point?
Stepped-point adds a micro-pilot step ahead of the lips for faster bite and better centering, especially on curved or coated surfaces, while retaining the self-centering benefits of a 135° split.
Q2: Will these drill stainless steel?
Yes—M35 cobalt is designed for stainless. Use lower RPM, cutting oil, and peck cycles.
Q3: Impact-driver compatible?
These are round-shank bits for 3-jaw chucks. Ask about hex-shank cobalt variants for impact tools.
Q4: Metric sizes available?
Yes—19-pc metric or mixed assortments are available on request for OEM orders.
Search-friendly keywords
19 piece cobalt drill bit set, M35 HSS-Co stepped-point drill bits, 135 degree split point metal drill, stainless steel cobalt bits, jobber length round shank, metal index case drill kit
Company Details
Business Type:
Manufacturer,Exporter,Trading Company
Year Established:
2008
Total Annual:
500-600
Employee Number:
30~50
Ecer Certification：
Verified Supplier
Jiangsu Xing Rui Precision Tools Co., Ltd. is a leading manufacturer of high-quality cutting tools in China, established in 2008 and located in YangZhou, Jiangsu Province—a major hub for cutting tool production with convenient transportation for global logistics. Main Products We special... Jiangsu Xing Rui Precision Tools Co., Ltd. is a leading manufacturer of high-quality cutting tools in China, established in 2008 and located in YangZhou, Jiangsu Province—a major hub for cutting tool production with convenient transportation for global logistics. Main Products We special...
Get in touch with us
Leave a Message, we will call you back quickly!