Description Diablo's bi-metal reciprocating saw blades for medium metal with Full Contact Arched Design are specifically designed for maximum performance in metal cutting applications, including angle tubing and metal ranging between 1/16" and 5/16" in thickness. The bladeâs oversized design with an ultra-hardened cutting edge provides faster and more rigid cuts in fewer passes. Diablo's Perma-SHIELDÂ non-stick coating protects the blade from heat buildup. All combined benefits provide up to 5X longer blade life compared to standard bi-metal blades