Designed for use with our #499 Prop Balancer. Accurately balances quadcopter props and allows you to eliminate vibration from unbalanced props. Works with all 6MM threaded props like DJI Phantom and more. Perfectly "true" shaft with clockwise threaded end and a counter-clockwise threaded end.
Du-Bro Products 6mm Quadcopter Prop Balancer Shaft - B00WOZH552