CNBTR Universal Oscillating Multitool Semicircle Saw Blades 88mm Black High-Carbon Steel with Countersunk Head Set of 5 Adaptation in the vast number of high-quality machines at home and abroad such as Bosch and Fein. Made of durable High-carbon steel and lasting performance It can cut wood, plastic, and soft metals,very versatile, suitable for most of the tools Safety instructions: Razor blades permanently enclosed in a cartridge or housing with less than 2mm of blade exposed. The bladed product is not use for people under 18 years. The item is only use for industrial cutting/engraving, not hazardous article.