For use with all changeable letterboardsPrecision-molded plastic letter and number sets with single bottom balanced tab. Letter sets are available in both Helvetica and Roman font style and as sprue sets or boxed sets.To view a complete list of letter sets, simply click on the Product Guide button located above.To view a sample of available fonts, simply click on the Additional View button located above.Sprue Sets: Part Number Font Character Size Pieces 47-02-SH34 Helvetica 3/4" 145 Pcs 47-02-SH1 Helvetica 1" 145 Pcs 47-02-SR1 Roman 1" 145 Pcs Boxed Sets: Part Number Font Character Size Pieces 47-02-BH34 Helvetica 3/4" 435 Pcs 47-02-BH1 Helvetica 1" 435 Pcs 47-02-BH2 Helvetica 2" 290 Pcs 47-02-BR1 Roman 1" 435 Pcs 47-02-BR2 Roman 2" 290 Pcs