Check the listing for details. Modus Track Dolly System - Platform with 4 Bearing Wheel Sets. Condition: New. Listed at 249.00 USD. PRODUCT DESCRIPTION The Modus Camera Mount is the foundation to a professional camera mounting system for use on vehicles & dolly tracks.Recommended to support cameras and accessories up to 12 pounds Features various 1/4-20 and 3/8-16 threads for ultimate compatibility Includes one (1) Modus platform, four (4) SolidTrax Wheel Sets with knobs Tripod head is not included.4 Sets of SolidTrax Wheel Assemblies allow you to mount the Modus on your own tracks sized 3/4 in to 1-1/2 inches. Track width will be 7-1/4 inches on center. FEATURES AND SPECIFICATIONSAll aluminum 4mm thick plate, 12 inches in diameterSupports camera loads weighing up to 12 lbs (5.45 kg)Black anodized aluminum to reduce fingerprintsVarious 1/4-20 and 3/8-16 threaded mounts, 1/4 in groovesUnit Weight: 6 lbs (2.7 kg)Shipping Weight and Dimensions: 8 lbs, 18" x 16" x 8"Lifetime Warranty and 30 Day Money Back Guarantee