45 Degree Description:

“The hi-load curved dolly track is constructed of anodized structural aluminum and designed to carry maximum loads with minimum deflection. The inner and outer rails are in contact with the ground along their entire length preventing any flexing between cross bars. Therefore, the load carrying capacity is rated in excess of two tons. Eight of these curved sections are needed to make up a circle, which has a 20 ft. (6.0 m) outside diameter. ” - Manufacturer Website

90 Degree Description:

“The hi-load curved dolly track is constructed of anodized structural aluminum and designed to carry maximum loads with minimum deflection. Flexing between crossbars is prevented as the rails are in contact with the ground along their entire length. Therefore, the load carrying capacity is rated in excess of two tons. Four of these curved sections are needed to make up a circle, which has a 14 ft. (4.2 m) outside diameter. ” - Manufacturer Website