SAVES TIME: Quickly Draw handwriting lines which are great for beginner writers, calligraphy, journaling or special needs students. Makes a great gift! THE ORIGINAL LEGILINER: Invented, created and distributed by an OT school based teacher with dozens of years of experience in the USA. TRADEMARKED SYSTEM: Each stamp housing is color coded for pattern differentiation and size of line. SAVE MONEY: BUNDLE to save! 15 different sizes and patterns of self-inking, rolling stamps for handwriting practice, music and math. Refillable, Oil Based Ink that lasts for months! QUALITY: Don't be fooled by cheap, copy cat imitations. We pride ourselves in our product and great customer service. We offer bulk pricing and accept purchase orders.