I'm EJ with EJH Precision Prop Balancers.
I build precision self-centering prop balancers for several different models of drones with self tightening props. Recently I have had numerous requests to build a precision self-centering balancer for the DJI Inspire which is my NEWEST Addition to the EJH Self-Centering Precision Prop Balancer Line.
Can be purchased on eBay or just send me a pm. My balancers are unique as they are engineered to offer the most precise and accurate reading than any other prop balancer to date. It's made with small precision ground tool steel rods that are cut and tempered to give some flexibility & threaded tips that are cnc machined from 6061-T6 aluminum. Each balancer comes with it's own protective storage tube. I invite you to read product reviews from feedback on eBay.
The EJH Precision Prop Balancer DJI Inspire