The Dolly Track 8 foot section is a straight track, heavy wall. Matthews does not recommend that two types of track be used together. The chrome plating used on the Heavy Wall can create size buildup and the finished diameter may be slightly larger. This can create a noticeable “bump” at the joint. Matthews curved tracks are available to complete 10′, 20′, and 70′ diameter circles. All Matthews Dolly Track is rated to a mazimum payload of 1200 lbs (545kg) at the industry standard of 24.5 center to center track width.