Proaim Flyking Precision Camera Slider (Mitchell Mount) - 3ft. Retails for $779 Mitchell Base. Also will mount on bowl tripods having 1/4"-20 & 3/8"-16 screw It's in perfect working condition. 115 lb. load capacity. It handles Arri Alexa, Sony F-55/5, Red One/Epic, C300 Canon cameras and accommodates Ranford Baker, Sachtler or any fluid head with Mitchell Base, 150mm or 100mm.