colour they are cardboard or
100% magnetic styles & are available with an erasable
pen and a choice of pen holder.
such as item TMC-2 - Mag Boards, it is made out of
.020 inches white plastic clip
and attachment included and item SIG01 Mag Memo
allow messages to be written
and wiped off time and time again with Magnetic strips
on back hold board and damp-erase
pen firmly in place.