The Bulldog # BD195369 3K capacity square tube jack you referenced is constructed of steel. The inner tube is zinc plated for extra corrosion resistance, the outer tube is gray painted steel.
I've linked you to our FAQ article about trailer jacks, which I hope you'll find helpful. view full answer...
The mirrors on the CIPA clip-on towing mirror, # 11953, are made of glass. The housing is automotive grade plastic. I have included a link to a video review for you. view full answer...
The Draw-Tite ball mount, # 2753, is black powder coated for corrosion resistance. Most of the ball mounts we carry will be powder coated unless otherwise stated (like the aluminum ball mounts). This particular ball mount is considered long because it measures 9 inches from the center of the hitch pin hole to the center of the ball hole.
I have included a link to our ball mount FAQ for you as a reference. view full answer...