FIVELAKE 039-QX-HS-1-105 High Steel Hole Saw Pilot Drill Bit 4-1/8 105MM M42

( Brand: Fivelake ), ( Manufacturer Part Number: 039-QX-HS-1-105 ), ( Part Type: Saw Drill Bit ), ( Size: 4-1/8 )

Review FIVELAKE 4-1/8 Inch 105mm Bi metal M42 High Speed Steel Hole Saw Pilot Drill Bit

The **Fivelake 039-QX-HS-1-105 4-1/8" (105mm) Bi-Metal M42 High-Speed Steel Hole Saw Pilot Drill Bit** is a precision-engineered cutting tool designed for professional and industrial applications where durability, accuracy, and efficiency are paramount. This high-performance hole saw is crafted from **bi-metal construction**, combining a durable **M42 high-speed steel (HSS) pilot bit** with a robust **bi-metal cutting edge**, ensuring extended tool life and superior cutting performance across a wide range of materials, including wood, plastic, metal, and composite substrates. The **105mm (4-1/8") diameter** makes it ideal for creating clean, precise holes in applications such as cabinetry, furniture fabrication, automotive repairs, and DIY projects where larger openings are required. The **M42-grade HSS pilot bit** is hardened to resist wear and heat buildup, reducing the need for frequent replacements and minimizing downtime, while the **bi-metal cutting edge** provides a sharp, self-sharpening cutting surface that maintains its edge even when drilling through tough or abrasive materials. Engineered with a **pilot drill bit** at the center, this hole saw ensures accurate hole placement and reduces the risk of wandering or misalignment, making it a reliable choice for both beginners and experienced craftsmen. Its **high-quality construction** and **ergonomic design** allow for smooth operation with most power tools, including drills and hole saw attachments, while the **durable steel body** resists bending and flexing, delivering consistent results with every use. Whether tackling large-scale industrial projects or precise home improvement tasks, this hole saw offers a perfect balance of strength, precision, and versatility, making it an indispensable tool for any workshop or construction site.

### **Pros and Cons of buying a Fivelake 039-QX-HS-1-105 (4-1/8" / 105mm Bi-Metal M42 High-Steel Hole Saw with Pilot Drill Bit)**

1. **High-Quality Construction** Made from **bi-metal (M42 high-speed steel)**, which offers superior durability and heat resistance compared to standard carbon steel or HSS alone. This makes it ideal for cutting through hard materials like metal, plastic, and some composites without excessive wear.

2. **Sharp Pilot Drill Bit Included** The included **pilot drill bit** helps guide the hole saw accurately, reducing the risk of wandering or misalignment, especially in delicate or thin materials.

3. **Versatile Applications** Suitable for **wood, plastic, aluminum, stainless steel, and other non-ferrous metals**, making it a versatile tool for DIY projects, plumbing, electrical work, and light metal fabrication.

4. **Precision Cutting** The **105mm (4-1/8") diameter** is a common size for general-purpose hole cutting, making it useful for tasks like installing pipes, vents, or mounting hardware.

5. **Cost-Effective for Frequent Use** While not as cheap as disposable hole saws, its **durability** means it can be reused multiple times, making it a better long-term investment than single-use options.

6. **Compatibility with Standard Drills** Fits most **corded and cordless drills** (e.g., DeWalt, Milwaukee, Makita) with a **1/2" shank**, ensuring broad usability.

7. **Good for Beginners and Professionals** The design is forgiving for **novice users** while still performing well for **experienced craftsmen** who need reliability.

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1. **Limited to Non-Ferrous Metals (Without Coolant)** While it can cut **aluminum and softer metals**, it may struggle with **hardened steel or thick ferrous metals** without proper lubrication (e.g., cutting oil or coolant). For tough materials, a **bi-metal hole saw with a coolant hole** or a **tungsten carbide-tipped** option may be better.

2. **Requires Proper Drill Speed** Using it at **too high RPM** can cause overheating and premature wear, while **too low RPM** may lead to poor cutting performance. Most users should stick to **moderate speeds (500 1,500 RPM)** for best results.

3. **Not for Very Thick Materials Without Reinforcement** While it handles **1/4" to 1/2" thick metal** well, **thicker or extremely hard materials** (e.g., 3/4" steel) may require **multiple passes, coolant, or a heavier-duty saw**.

4. **Potential for Tooth Breakage** Cheaper bi-metal saws can sometimes **lose teeth** if used improperly (e.g., dry cutting, excessive force). This one is **better than basic HSS**, but not as indestructible as **tungsten carbide** options.

5. **Shank Size Limitation** Only fits **1/2" shank drills**, so users with **1/4" shank tools** (common in smaller cordless drills) cannot use it without an adapter.

6. **No Coolant Hole** Unlike some professional-grade bi-metal saws, this one **does not have a built-in coolant channel**, meaning users must apply lubricant manually for metal cutting.

7. **Not for Masonry or Concrete** Designed for **metal and soft materials only**; for **brick, tile, or concrete**, a **diamond or carbide-tipped hole saw** is required.

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### **Ending Conclusion**

The **Fivelake 039-QX-HS-1-105 (4-1/8" Bi-Metal M42 Hole Saw with Pilot Bit)** is a **solid, mid-range tool** that strikes a good balance between **durability, versatility, and affordability**. It excels for **general-purpose hole cutting in wood, plastic, aluminum, and softer metals**, making it a **great choice for DIYers, handymen, and light fabrication work**.

However, it has **limitations** it s **not ideal for thick or hardened steel without coolant**, lacks a **coolant hole**, and requires **proper technique** to avoid premature wear. If you need **heavy-duty metal cutting**, a **tungsten carbide-tipped saw** or a **coolant-capable bi-metal saw** would be better. For **most casual users**, this is a **reliable and cost-effective option**.

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### **Recommendation**

You need a **durable, reusable saw** for **wood, plastic, aluminum, and soft metals**.

You have a **1/2" shank drill** and work on **moderate-thickness materials**.

You want a **pilot bit included** for better accuracy.

You re looking for a **budget-friendly but high-quality alternative** to disposable saws.

You frequently cut **thick or hardened steel** (consider a **coolant-capable or carbide-tipped saw**).

Your drill has a **1/4" shank** (requires an adapter).

You need **masonry or concrete cutting** (use a **diamond or carbide saw** instead).

You prioritize **maximum durability** over cost (a **tungsten carbide saw** lasts longer for metal).

**Final Verdict:** **Highly recommended for general-purpose use.** If your needs align with its strengths, this is a **practical and well-built tool** that will serve you well for years with proper care.

Details:

Brand Name: Fivelake. Smooth User Experience: Optimized multi-hole design and spring-loaded pilot drill automatically eject the cut-out disc after drilling, improving chip removal efficiency reducing clogging, especially when cutting thicker or harder materials. Wide Range of Applications: Suitable for drilling holes in wood, plywood, plastic, PVC, gypsum board, drywall, rubber, and various thin metal sheets. Number of Teeth: 4.

Compatible Material: Metal, Plastic, wood. Easy to Use Secure Fit: Clear size markings allow quick selection; the shank design is compatible with most electric and cordless drill chucks, ensuring fast installation, secure clamping, stable torque transmission, reduced slipping under high load. Maintains a sharp cutting edge even under high temperatures and prolonged high-speed operation, without easy deformation. Manufacturer: Fivelake.

High-Quality: Materials High-Quality Materials: Made from M42 bi-metal high-speed steel, offering excellent hardness, heat resistance, and wear resistance. Part Number: 039-QX-HS-1-105. Model: 039-QX-HS-1-105.

part #: 039qxhs1105 price

• $24.02

specifications sawbladeother:

• brand: Fivelake
• mpn: 039-qx-hs-1-105
• part type: Saw Drill Bit
• size: 4-1/8

returns sawbladeother:

• policy: Returns Accepted
• method: Money back
• time: 60 Days
• paid by: Seller

offer sawbladeother:

• options: Ship-to-home
• quantity: 2
• started: June 9, 2026
• availability: In Stock
• sold: 0

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• rating: 99.6%
• city: Huntington beach, CA
• # reviews: 2492

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• condition: New
• Power Tool Air Tool Accessories > Saw Blades > Other Saw Blades

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• cost: $0.00
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