Every key we sell is physically tested for accuracy on the exact switch or other device that's on the named equipment, and each one is guaranteed to work. All keys are displayed with an image you can compare to the key you're using now (the key head may look different from your current key, compare the key cuts). Additionally, our aftermarket part numbers correspond to OEM part numbers; you can carefully compare them when making your selections, to be sure you're ordering the exact item needed for your equipment. Also, all of our keys are stamped with a code for easy identification.