You save 410 (21%)
21% off the seller list price
Estimated doorstep delivery by 10 Nov - 12 Nov from USA
Drill Harder Metals with Confidence
SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set provides professional-grade precision for demanding metalworking tasks. Made from industrial-grade M35 High Speed Steel with 5% cobalt alloy, these bits offer superior heat and abrasion resistance, ensuring a long lifespan even when drilling hardened steel. The 135-degree split-point tip starts drilling instantly and prevents bit wandering, making it ideal for stainless steel, cast iron, aluminum, and other tough materials. Imported from authorized US retailers, these bits offer a durable solution for professionals and DIY enthusiasts alike.
These heavy-duty drill bits are engineered for fast, precise hole drilling. Their M35 cobalt alloy construction provides 4 times the lifespan of standard metal drill bits when working with materials like PCB boards, plastics, wood, and normal steel. For optimal results and extended tool life when drilling very hard materials, applying drilling or cooling oil is recommended. The straight shank design ensures compatibility with standard electric and cordless drills, making them a versatile addition to any toolkit.
For Indian users, these SPKLINE drill bits offer a reliable alternative for precision metalworking. The set includes 10 bits, each 85mm in total length with a 50mm working length, conveniently packed in a durable plastic box for easy storage and transport. All customs duties and GST are included in the price, with delivery via ExpressBox tracked shipping, arriving within 15-17 days.
Engineered for Extreme Durability
SPKLINE's M35 Cobalt drill bits are built to withstand the rigors of drilling hard metals. The 5% cobalt alloy provides exceptional heat resistance, crucial for maintaining sharpness and preventing premature wear when working with materials like stainless steel and hardened alloys. This superior durability means fewer bit changes and more efficient work, saving you time and effort on demanding projects. Unlike standard HSS bits that can quickly dull on tough surfaces, these cobalt bits maintain their cutting edge, ensuring consistent performance job after job. Imported from authorized US retailers, they represent a commitment to quality and longevity for serious metalworkers.
Ideal for Metalworking Professionals & DIYers
This set is perfect for anyone frequently drilling into hard metals, stainless steel, or hardened alloys. If you're a metal fabricator, IT hardware engineer, or a serious DIY enthusiast working with tough materials, these bits will perform reliably. However, if your projects primarily involve soft woods or plastics and you don't anticipate drilling hardened metals, a standard HSS bit might suffice. For users with standard three-jaw chuck drills, ensure your chuck can securely grip a 1/4" hex shank for optimal performance and safety.
Typical situations where SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set | M35 High Speed Steel with 5% Cobalt Alloy helps — illustrative scenarios, not customer reviews.
A metalworking professional in Delhi needs to drill precise holes in stainless steel fabrication for a custom project.
SPKLINE's 4.8mm cobalt drill bits with a 135° split-point tip ensure accurate, fast drilling without wandering on stainless steel. The M35 HSS alloy provides the necessary hardness and heat resistance for consistent performance, lasting significantly longer than standard bits.
A DIY enthusiast in a humid coastal city like Mumbai needs to drill into aluminum and wood for a home repair project.
These versatile SPKLINE drill bits handle aluminum effectively and also work well on wood. The cobalt alloy offers durability, and keeping them dry will prevent rust, ensuring they remain sharp for future projects.
| Primary Material | High Speed Steel (HSS) |
| Cobalt Content | 5% |
| Heat Resistance | High |
| Abrasion Resistance | High |
| Recommended Use | Drilling into stainless steel, light-gauge metal, high-carbon steel, aluminum, alloy steel, cast iron, abrasive alloy metal, hardened steel, PCB board, plastic, wood, jewelry, sheet metal. |
| Drilling Angle | 135 degrees |
| Shank Compatibility | Electric drills, cordless drills, rotary drills with chucks accepting 1/4" hex shank. |
| Cooling/Lubrication | Recommended for very hard materials to improve results and prolong life. |
| Cost per use | 10 bits at 85mm total length: ₹158 per bit |
| Shelf life after opening | 12 months (standard for metal tools) |
| Reapplication math | Set of 10 bits provides ample replacements for frequent use on hard metals. |
| Contraindications | Not recommended for masonry or concrete drilling; may rust if left exposed to high humidity without oil. |
| Allergens / common irritants | None typically associated with metal drill bits. |
| Feature | SPKLINE 10 Pcs | Others |
|---|---|---|
| Material & Durability | M35 High Speed Steel with 5% Cobalt Alloy. 4x longer life in hard metals. | Standard HSS or basic coated bits. Durability varies significantly by brand; often shorter lifespan in hard metals. |
| Tip Geometry | 135-degree Split Point. Starts fast, no walking. | Often 118-degree standard point; may require center punching. Split points less common on budget bits. |
| Hard Metal Drilling | Excellent for stainless steel, hardened steel, cast iron, alloys. | May struggle or dull quickly with hardened steel and stainless steel; performance varies. |
| Precision & Control | Split point ensures accuracy and reduces bit wander. | Standard points can wander, requiring more effort for precise hole placement. |
| SKU | nyg4217 |
| GTIN | 0784099652097 |
| Brand | SPKLINE |
| Set Name | 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set |
| Material | M35 High Speed Steel with 5% Cobalt Alloy |
| Shank Type | Straight |
| Tip Point | 135-degree Split Point |
| Total Length | 85 mm (3.35 inches) |
| Working Length | 50 mm (1.97 inches) |
| Diameter | 4.8 mm (3/16 inches) |
| Number of Pieces | 10 |
| Package | Plastic Box |
| Country of Origin | Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners |
About SPKLINE
SPKLINE specializes in high-performance drill bits and cutting tools, focusing on durability and precision for metalworking professionals.
Compliance & Legal
No product-specific compliance warnings identified. Standard imported-goods terms apply: customs duties & GST paid; for personal use in India; follow the manufacturer's usage instructions on the packaging.
Share your experience
Bought this from CrowCrowCrow? Other buyers want to hear how it went.
This item:
SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set | M35 High Speed Steel with 5% Cobalt Alloy
1,580
This item
SPKLINE 10 Pcs 4.8mm (3/16") Cobalt Drill Bit Set | M35 High Speed Steel with 5% Cobalt Alloy
1,580
Total price:
4,470
You save 1,730 (28%) Extra3 items selected
3 items
4,470You save 1,730 (28%) Extra
| Attributes | Current |  |  |  |  | ||
|---|---|---|---|---|---|---|---|
| Spec | |||||||
| Price | 1,580 1,990 | 1,400 1,610 | 1,490 2,600 | 1,670 2,660 | 6,260 7,980 | 4,540 6,770 | 6,850 10,320 |
| Brand Name | SPKLINE | SPKLINE | SPKLINE | MK Morse | Eagle Abrasives | Threadmade | Rubbermaid |
| Source | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail | US Retail |
| Sold By | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow | CrowCrowCrow |
Why shop with us
One price. One payment. No surprises.
High risk
Buying Direct
Crowcrowcrow
Safe Lane
