4 Pegs. All steel, good for grinding and other tricks.

Pegs fit together perfectly with almost no play.  The inner one slides into the outer one with the ends flush. Pretty amazing stuff. Took a lot of searching to find this unique set.

You can also just use them as 4 regular pegs two on each wheel.

Mounts to 14mm (5/8 inch) axles. These pegs slide over your axles, then you put the nut inside of them.