Zensations 10pk Triangle Tub Mechanical Colouring PencilsZensations refillable mechanical coloured pencils from Zebra pen have colours that are easy to blend for shading and mixing. The colour is smooth, rich and vibrant and the pencil has a triangular barrel making it easy and comfortable to hold. The 2mm lead is long lasting, durable and refillable! Non toxic. Pack of refill leads available separately.