Rule material is used to create lines or underscores. It resembles leads and slugs but is type high (.918"). 2 point hairline rule is 2 point thick and tapers at the top creating a line that is approximately 1 point wide. 2, 6 and 12 point full face rule is not tapered, creating a line the full width of the rule body. Can be cut to length with a hack saw or band saw. Assortments of various lengths and quantities are offered.