Imperial Blades Starlock 1-3/4" Multi-Material Metal/Wood Blade, 3PC (ISBL340-3) is composed of heavy-duty bi-metal (BiM) for up to 5X longer life than standard Imperial high carbon steel blades. The wavy set tooth pattern makes this blade ideal for metal and multi-material applications by dispersing the wear on all teeth. Recommended applications are: Metal, Wood & Nails, Wood, PVC and more. Popular projects include deck maintenance, fence repair, flooring, framework with nails or staples and plunge cutting vents and outlets. Compatible with Starlock multi-tools: Bosch and Fein. Also fits non-Starlock multi-tools: Milwaukee, Ridgid, Makita, Rockwell and more.