Must be ordered with telescope. Welded steel construction. Sandblasted and powdercoat painted to match telescope. Fine azimuth adjuster. Roller bearing wheels also roll on flat surfaces or angle iron tracks by customer.
Prices includes palletizing and wrapping for motor freight.
More details at Rolling Base page. Internal T-thread is removed. Entire coupler rotates with camera body. Image similar to SLR coupler. Other types quoted upon request.