BOSCH T123X 5-Pack 4 in. Progressor Jig Saw Blades - Fast Metal Cuts

In this review the BOSCH T123X 5-pack of 4 in. Progressor T-shank jig saw blades is judged as a practical, budget-minded choice for users who need reliable metal cutting performance. The single biggest reason to buy is the blades' progressive 10-24 TPI tooth design and HSS construction, which together deliver fast through-cuts and a long service life across a range of thin metal and non-ferrous materials. For hands-on tradespeople and hobbyists who cut aluminum, sheet metal, pipes or plastics, these blades consistently combine speed and durability.

Key Features

• Progressive 10-24 TPI: The variable tooth pitch lets a single blade cut quickly through mixed thicknesses while reducing wear when moving between thin and slightly thicker metal.
• HSS construction: High speed steel construction increases blade life and maintains cutting performance in abrasive or thicker sections of metal.
• Multi-purpose cutting range: Cuts thin metal, sheet metal up to 8 gauge and non-ferrous metals and plastics within the specified thickness ranges, making it versatile for repair and fabrication work.
• T-shank fit: The T-shank design offers secure, easy mounting and fits most modern jig saws without adaptors.
• Pack of five: Having five blades in the package gives good value and replacement spares for longer projects or frequent cutting tasks.

Who It's For

These blades are best for contractors, metal fabricators, and serious DIYers who often cut aluminum, 14-gauge steel and non-ferrous metal profiles and want a single blade that handles varied thicknesses. The combination of progressive teeth and HSS material suits jobs where speed and blade life matter, such as light sheet metal work, HVAC duct trimming, plumbing pipe cuts and metal hobby projects.

Users who regularly cut very thick plate metal or require ultra-fine finish cuts on delicate materials may want specialized blades instead; this pack is optimized for multi-purpose metal and plastic cutting rather than ultra-smooth finishing on heavy gauge ferrous plate.

Pros & Cons

Pros

• Good cutting speed across mixed metal thicknesses due to the progressive 10-24 TPI pattern.
• Durable HSS construction yields long blade life and fewer changes during extended jobs.
• Well suited for aluminum, 14-gauge steel and non-ferrous metals, with customers noting solid value for money.

Cons

• Not optimized for very thick ferrous plate or ultra-fine finish cuts where a specialized blade would perform better.

Specifications

Brand	BOSCH
Model Pack	5 blades per package
Overall Length	4 in
Working Length	3 in
Tooth Pitch	10-24 TPI progressive
Material	High speed steel (HSS)
Primary Application	Thin metal, non-ferrous metal, plastics, fiberglass

Our Verdict

The BOSCH T123X 5-pack is a dependable, cost-effective choice for anyone who needs a versatile metal cutting blade that balances speed and longevity. For metalworkers and DIYers cutting aluminum, sheet metal and non-ferrous materials, these HSS Progressor blades deliver strong performance and value, though those needing specialized heavy-plate or ultra-fine finish blades should look elsewhere.

Frequently Asked Questions

Will these blades cut stainless steel?
They can cut thinner stainless steel within the specified ranges (about 1/16 in to 1/8 in), but performance will be slower than with softer metals and blade life depends on feed rate and cooling.

Do these blades fit most jig saws?
Yes, the T-shank design fits most modern jig saws that accept T-shank blades without an adaptor.

How many blades are in the package?
The package includes five 4 in. Progressor blades, providing spares for extended projects.