Tripod Dolly with Pivoting Wheels for Curved or Straight Track Rotating wheel trucks. Can be used on PVC, metal or flexible curved tracks from 1" to 3" diameter. Industry standard 1/4 and 3/8 attachments and hardware. Camera can be mounted directly to dolly or with tripod head. Multi Camera Capable. Riser on base can hold B-Roll camera while tripod holds A-Roll Video head can be attached to riser for floor or low profile shots