Milwaukee 48-00-5571,  Sawzall 6" The WRECKER with NITRUS CARBIDE Blades - 5 pack
Condition - New in sealed factory package 

Cuts through the widest variety of materials: wood with nails and screws, roofing material, plaster and drywall, rigid conduit and black pipe
6TPI design for best material versatility
Fang Tip™ design for fastest plunge cuts in woods, plaster and drywall
1/2" universal tang
Available in 6", 9" and 12" lengths in 1PKs, 3PKs, and 5PKs
Made in the USA
Best blade for residential demolition projects