DJI Phantom 2 Shielded Prop Guard
Can be use with 9.4 inch propellers, may work with slightly larger props but I have not tested it.
Also compatible with Quanum Nova & Cheerson CX-20
Be responsible! Always use prop guards! It is not so much to protect your aircraft but more for the safety of the people around you
Print with higher infill. Although it adds to the overall weight (still pretty light) it prevents the shield wall from breaking easily during a crash.