Add Yahoo as a preferred source to see more of our stories on Google. So it's time to buy some new wheels. What hardness should you get? What do the durometer numbers mean? What's a durometer anyway?

Rockwell hardness testing is a method of determining the relative hardness of a material. In this test, hardness is measured by determining the depth of residual penetration by a steel ball or a ...

The hardness of a material is defined as its resistance to another material penetrating its surface and is related to its wear resistance and strength. Higher hardness is related generally related to ...

Home Matters.BY DAVID BRADLEYTHE ASSOCIATED PRESSThe next time you’re in the market for a hardwood floor, butcher block table or cutting board, keep the Janka scale in mind.The Janka scale is the ...

So it's time to buy some new wheels. What hardness should you get? What do the durometer numbers mean? What's a durometer anyway? Don't worry, we got you. All skateboard wheels are made from urethane, ...