Multistar 2209 V2, 2213 V2, 2216 V2 Prop Adapter Set with 6mm CW / CCW Threads Included: 4 - Multirotor 2x6x12 Prop Adapters, 16 - screws, 4 -Hex Nuts and Washers CNC Machined from Billet Aluminum Use with plastic, carbon fiber, or DJI self tightening props with 6mm hub Very strong and light weight with a 6mm shaft For Multistar 2209 V2, 2213 V2, and 2216 V2 Brushless Motors