Rc Double Universal Joint Cardan Joint Gimbal Couplings 4*4mm/5*5mm/6*6mm/8*8mm/10*10mm With M3/M4 Screw
https://www.vogueparade.com/shopping/EN/200001385/1/32801849132/rc-double-universal-joint-cardan-joint-gimbal-couplings-44mm55mm66mm88mm1010mm-with-m3m4-screw//