BULLSHEET

Back-up boards, back-up sheets, back-up panels, entry boards, entry sheets, and entry panels made primarily out of metal for use in the operation of drilling holes in printed circuit boards

Back-up boards, back-up sheets, back-up panels, entry boards, entry sheets, and entry panels made primarily of plastic for use in the operation of drilling holes in printed circuit boards; and back-up boards, back-up sheets, back-up panels, entry boards, entry sheets, and entry panels made primarily out of wood for use in the operation of drilling holes in printed circuit boards