The dry erase surface makes these sentence strips convenient and reusable. Teachers can use them again and again. Ruled 1-1/2" with red baseline and 3/4" dotted midline on dry erase side. Dry erase surface on one side. Film-wrapped packages contain 30 strips. Assorted pack contains Blue, Pink and Yellow.The dry erase surface makes these sentence strips convenient and reusable. Teachers can use them again and again. Ruled 1-1/2" with red baseline and 3/4" dotted midline on dry erase side. Dry erase surface on one side. Film-wrapped packages contain 30 strips. Assorted pack contains Blue, Pink and Yellow.