There are over 40 types of wrenches but it's unrealistic -- and unnecessary -- for every homeowner to own them all. It's similar to thinking you need every specialized type of hammer. However ...

Impacts per minute (ipm or bpm) measures the amount of impacts the wrench's hammer makes on its anvil, a process SlashGear explained in the intro to our ranking of impact wrench brands.

Today’s quality ratchet wrenches “purr” rather than “rattle” when twisted. Dead-blow hammers have a cavity inside their head partially filled with lead shot. When the hammer is swung ...