Description The Caran d'Ache SwissRide ballpoint refill in Blue with a Medium point is a rich blue, and is proprietary. The Caran d'Ache SwissRide refill is the perfect refill for your Caran d'Ache 888 ballpoint pen! One refill can write for up to 600 A4 sized pages.We offer Free Shipping on all orders over $59 for US customers, and for orders over $250 for our Canadian customers.