Strap Wrench Non -Sparking Secure Tools's Non-Sparking Strap wrenches have an adjustable loop that can tighten around objects like plumbing pipes or automotive parts so your tool doesn't slip around. A Non-Sparking strap wrench includes a nonmarring strap on one end that can be adjusted to fit around various objects. The strap wrench can also be a standard household tool for DIY’ers that have things that get stuck from time to time