This is a prop balancer adapter pair (CW and CCW) for the DJI Phantom 2 self-tightening nuts to Dubro Prop Balancer. I printed it out of Nylon and it works amazingly well. Adapts from the 6x1mm Metric Threads to the 3mm Dubro Balancing rod After investigating differing versions of lathed rods and toying with using differing medical tubings on the Dubro rod, I decided that I would embark on this small 3d drawing project to help with the Quadcopter I'd recently obtained. Worked out better than I expected, especially when printed in Nylon given it's forgiving nature when printing fine threads.