Models View all 3.5mm (1/8in) Mono Aux Socket (panel mount) 5 70 2 HV6150H Servo 2 107 0 Henge UBEC 4A 2 257 0 Trianglelab filament runout sensor 5 92 0 FIT0419 Micro DC Geared motor 6V 2 100 0 Mad Components M50C35 Brushless motor 4 136 0