The nuts are made of aluminum. 

How big are they?

These nuts are 8 inches long.  They are 5 1/2 inches wide. 

How much do they weigh?

One Pound.

Are these ceramic cause they look like they are ceramic?

No , they are drop forged aluminum and powder coated BUT THEY LOOK CERAMIC. 

Plastic will fade. Each year the color gets lighter and looks like faded balls. Our finish won't do that, but plastic will.  Powder coating is a 30 year finish and it will not fade EVER!  Chromed plastics are not durable, all that glitters is not gold. Buyer Beware, I bet that finish comes with a warning.

What is powder coating?

 The powder used for the process is a mixture of finely ground particles of pigment and resin, which is sprayed onto a surface to be coated. The charged powder particles adhere to the electrically grounded surfaces until heated and fused into a smooth coating in a curing oven.

What are its advantages?
 

Powder coating is one of  the longest-lasting, and most color-durable quality finishes available.

 Powder coated surfaces are more resistant to chipping, scratching, fading, and wearing than other finishes.  It also protects the environment.  No volatile organic compounds.