Woot offers Milwaukee 48-00-5094 12 in. 8/12 TPI. Multi-Material Cutting SAWZALL Reciprocating Saw Blades - pack of 5 for $15.97 (orig. $39.99). Free shipping for Prime Members. 

Product Description:
Super SAWZALL Blade are made with Matrix II high speed steel teeth containing 8% Cobalt to Keepa sharper tooth edge longer. The tough Bi-Metal design allows faster cutting, longer life Blade that can bend without shattering. Milwaukee designs and manufactures Sewall Blade for the toughest professional applications. This blade has a 1/2 in. universal tang that fits all SAWZALL and standard competitive saws. Includes 5 individual Blade. All purpose blade for cutting all woods, nail embedded woods, composition material, plastic, ferrous and non-ferrous metals, and cast iron.

• 8/12 TPI, 12 in. L, bi-metal construction
• 1/2 in. universal tang fits all seawalls
• All purpose blade for cutting all woods, nail embedded woods, composition material, plastic, ferrous and non-ferrous metals, and cast iron

In the box: (1) Milwaukee 48-00-5094 12 in. 8/12 TPI. Multi-Material Cutting SAWZALL Reciprocating Saw Blades - pack of 5