Review on EZARC Titanium Oscillating Multitool Blades: High-Speed Power Cuts for Wood, Metal & Hard Materials - 3-Pack by Richard Nonya

These blades are excellent. They are designed to do what the manufacturer claims when the blades are used properly. Here are two responses to bad reviews. First, other reviewers seem to think they can cut masonry, cement board, or other similar products with these blades. These blades are not designed for such materials and the manufacturer does not claim that the blades will cut these products. Please stop leaving bad feedback because of your abuse. Instead, buy a grinding wheel that claims to cut things that look like brickwork. Second, other reviewers complain that these drives become dull when screwed. I understand the confusion as the description says hard metal. However, these blades can cut nails, not screws. The metal composition of nails is not the same as that of screws. The frame nails are designed to prevent lateral movement. Nails are more prone to bending (more malleable) than breaking. The screws are more fragile. If you drive a screw while it's in the board, the screw usually breaks. The screws are there to hold the parts together, not to prevent sideways movement. Due to the difference in ductility, these blades will not cut screws, but cut nails quite easily.