For some parts, yes. We have extra crank handles, and blue knobs for adjusting the ratchet function as well as the knob to release the steering/ratchet arm. We may have a few other parts like wheels that we’ve scavenged from used or broken jacks as well. The blue knobs run $15 each and we can send them out to you. Let us know if the knob you want is to adjust the ratchet motion on top of the wheel, adjust the ratchet motion on the ‘arm’ or to release the steering/ratchet arm. The US importer, ArkCorporationUS doesn’t stock the knobs but does have crank handles, wheels, ratchet handles and crank handles, if they have it go ahead and order from them.