Harbor Freight Multimeter arms

I needed a little more distance on the multimeter probes than what was already available. I saw many different options but I liked the snap in capabilities from https://makerworld.com/en/models/627467?from=search#profileId-552062 so I cut them off and connected them to https://makerworld.com/en/models/910465#profileId-871231 with an additional smaller version to hold the probes in place. The adjustable distance really came in handy for me and may help you out as well. I don't believe the type of filament would matter much since it would mainly be inside. I personally printed mine in PETG just in case I forget it outside.