These 3D Printed Bumpers are for the Lumenier QAV-PRO Whoop 5" and provide nice protection as your first point of contact in the event of a crash or bumping into things. The QAV-PRO 5" Whoop is an amazing cinematic style frame! It is quite a gift to build a beautiful rig like this so it is important to keep it protected. These are a great option as an alternative to foam bumpers, and they also make your frame look even cooler!