4" 10TPI T-Shank Multi-Material Bi-Metal Jig Saw Blades 5PK

What it is:

The 48-42-5310 is a Milwaukee 4" 10 TPI bi-metal T-shank jig saw blade set (5-pack). It’s a general-purpose cutting blade designed to handle both wood and light metal applications.

Key specs:

• Blade length: 4 inches
• TPI: 10
• Material: Bi-metal (steel body + hardened cutting edge)
• Shank: T-shank (modern quick-change style)
• Pack size: 5 blades
• Application: Wood, nail-embedded wood, light metal

Key features:

• Bi-metal construction: Longer life than carbon or standard HCS blades
• 10 TPI tooth design: Fast cutting with a balance of smoothness and speed
• Multi-material capability: Cuts wood and light metal in one blade type
• Durability-focused design: Built for jobsite use and impact resistance
• T-shank fit: Works with most modern jig saws

In plain terms:

This is a “general-purpose demolition / framing blade”.

It’s not specialized like your others:

• not fine metal cutting (like 24 TPI)
• not thick steel cutting (like 14 TPI metal blades)
• not clean finish wood-only blades

Instead, it’s made for mixed conditions, especially:

• wood with nails
• framing and remodel work
• quick rough cuts where switching blades isn’t practical

Simple takeaway:

• 48-42-5310 = general-purpose T-shank jig saw blade
• 10 TPI = fast, all-around cutting
• Bi-metal = tougher, longer-lasting
• Best for wood + nails + light metal in one blade