Vulcanized fiberboard material 

Grey bottom piece

Black top piece

40 sets in this listing(1 top+1 bottom=1 set)

Free Eyelets are included.

For 0.187" diameter rods

MADE IN USA

The flatwork pieces are made-clean. There is NO brown sticky residue along the edges, you do not need to do extra cleaning before use.

Top flatwork - .062" thick. 2-1/16" Pole-piece spread. The holes fit our .187" diameter magnets.

Bottom flatwork -.093" thick. 2-1/16" Pole-piece spread. The holes fit our .187" diameter magnets.

We combine shipping. Thank you!