Alloy Rear Derailleur Dropout Mech Hanger RMM234
Replaceable alloy rear derailleur dropout mech hanger will fit various DiamondBack, Claud Butler/Raleigh bikes, plus lots of other makes.
These hangers are specifically designed to break to prevent damage to your frame.
Also see our GH09 hanger which is very similar
Unfortunately it is not possible to stipulate which models these hangers will fit, as manufacturers tend to change frame designs frequently. So in order for you to ascertain compatibility you will need to match your existing hanger with the photographs.
This particular hanger is commonly referred to as an "RMM234" hanger.