3/8ft Solid Carbide Jobber Drill Bit 118 Point Angle - Durable Cut

In this review of the 3/8' solid carbide jobber drill bit the bottom line is straightforward: this bit is for metalworkers and maintenance technicians who need a rigid, sharp tool for drilling harder metals. The single biggest reason to buy is the solid tungsten carbide construction, which delivers greater rigidity and edge life than typical high speed steel bits for demanding work in stainless steel, alloy steels and other tough materials. The review observed clean cuts and fast chip evacuation on suitable jobs, though users should mind brittleness under abuse.

Key Features

• 3/8' drill diameter: a common mid-size diameter that suits general metalwork and repair tasks with familiar drill chucks.
• 2.756' flute length: provides enough flute depth to remove chips efficiently when drilling medium-thickness plates and parts.
• 4.25' overall length: gives a balance of reach and rigidity for most bench and machine drill operations without excessive flex.
• 118 point angle: a general-purpose tip geometry that centers well and performs across steels and nonferrous metals.
• Solid tungsten carbide material: superior rigidity and wear resistance compared with high speed steel for longer cutting life in hard materials.
• Sharp flute geometry: designed to deliver quick, smooth, neat holes with minimal burr formation on proper feeds and speeds.

Who It's For

The bit is best suited to machinists, maintenance crews and metal fabricators who routinely drill harder substrates such as stainless steel, tool steels, alloy steels and copper, and who value a carbide edge for precision and wear resistance. It works well in machine-shop setups where proper speeds, coolant, and steady feeds are maintained.

It is not ideal for casual DIYers who will subject the bit to hammering, side loads, or intermittent hand-drill abuse, since carbide is brittle compared with HSS. Those needing a wide assortment of coated bits or extreme toughness under shock loading should look elsewhere.

Pros & Cons

Pros

• Excellent rigidity and edge life on hard metals due to solid carbide construction.
• Clean, burr-minimizing cuts when used with correct speeds and coolant.
• Versatile 118 point angle that centers reliably on common metalwork tasks.

Cons

• Brittleness under improper use: several users report breakage if fed too aggressively or used in handheld abuse situations.

Specifications

Brand	LU&MN
Drill diameter	3/8' (0.375 in)
Flute length	2.756'
Overall length	4.25'
Point angle	118 degrees
Material	Solid tungsten carbide (uncoated)

Our Verdict

The 3/8' solid carbide jobber drill bit is a sensible buy for professionals who need a durable, rigid bit that cuts cleanly through stainless and alloy steels when used properly. It represents good value when matched to machine drilling with correct speeds and coolant, but users should accept that carbide trades toughness for hardness and must be used with controlled feeds to avoid breakage.

Frequently Asked Questions

Can this bit drill stainless steel?
Yes, the solid carbide material and sharp flutes are suitable for stainless steel when used at appropriate speeds with coolant.

Is the bit coated for extra life?
No, the bit is uncoated; the raw carbide provides hardness and wear resistance across a wide range of applications.

Will it work in a hand drill?
It can be used in a hand drill but is best in a machine; avoid side loads and aggressive feeds to reduce risk of breakage.