You can use a handle for DE razor, just insert something like Stainless Steel Flat-Tip Set Screw 18-8, M5 x 0.8 mm Thread, 12 mm Long. https://www.homedepot.com/p/Glacier...gclsrc=aw.ds&dclid=COqlhJSt0dgCFeS7swodykQIpA I do not know the thread of your GEM.
That is they kind of thing I love to do! Especially when it does not hurt or damage the original pieces!