1.   Crews will lay out a mat of hardened steel on top of the gravel over which the massive structure will roll.

2.   Files are essentially long pieces of hardened steel with parallel rows of cutting teeth.

3.   He uses both hardened steel and maple spinning tools to bend the metal.

4.   It has a hardened steel head that is not likely to splinter or chip if you strike a cold chisel.

5.   It should be made of hardened steel and have a one-inch throw.

6.   Masonry nails are made of hardened steel.

7.   Secure the cellar door with a hardened steel padlock.

8.   Since a file is a relatively simple tool, a piece of hardened steel with teeth cut across the surface, using it should be fairly straightforward and easy.

9.   The cylinder guard is a hardened steel plate with a clearance hole for the key.

10.   The hammer head is hardened steel, which is prone to chipping, and those flying chips are dangerous, especially to eyes.