Black vulcanized fiberboard material,Top and Black bottom pieces.

10 Black sets(1 pc top+1 pc bottom=1 set)

Free Eyelets 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.