Volveshots BX300 Lite Portable Electric 1.6m Dual Rail Camera Track Dolly Slider Payload 70KG for DSLR Camera Motorized Slider

4×4 wheels dolly, standard 100 & 75mm Bowl, compatible with 30-50mm diameter track, light stand/tripod support, equipment bag, and the optional electronic  control systems.All this factors are designed for users to have a better experience.