The -20 to 20 Number Line Desk Tapes provide a clear, easy-to-read visual aid for students to reference as needed for math activities. Each roll of self-adhesive number lines includes 36 student desk tapes that measure 20" x 1" each. Student desk tapes are perfect for students to reference when learning about numbers. Each roll is packaged in a convenient self-dispensing box. 36 self-adhesive tapes, bundle of 3 packs, 108 tapes total