Not sure those are a direct fit on a savage without proper cvd/buggy type axles... especially if he's asking about the older e-savage vs the later savage flux. The older e-savage had a smaller diameter shaft where the hex sat, same size as traxxas axles. I used to use those on my nitro revo's with the HPI flange nut. The nitro savage and savage flux hex's had a larger ID and the 17mm hex wouldn't sit on the shaft nicely.
Not sure those are a direct fit on a savage without proper cvd/buggy type axles... especially if he's asking about the older e-savage vs the later savage flux. The older e-savage had a smaller diameter shaft where the hex sat, same size as traxxas axles. I used to use those on my nitro revo's with the HPI flange nut. The nitro savage and savage flux hex's had a larger ID and the 17mm hex wouldn't sit on the shaft nicely.