Riptide Mechanical Pencils have a sporty style and lightweight barrel for true, high performance at an economical price. Their sliding sleeves protect shirt pockets, backpacks, etc., and their rubberized grip design allows excellent gripping power and control.The pencils possess a reliable and smooth lead advance system. They also feature large erasers and convenient metal pocket clips.Two sets are available, one with .5 mm. pencils and one with .7 mm. pencils. Both sets come with three Riptide Mechanical Pencils and six bonus eraser refills.