These are the standard refill that is placed in each and every pen that i sell. These have a smooth, easy writing feel that is unsurpassed by your everyday, office supply refill. In addition, by purchasing here they are less expensive to purchase. Remember, quantity and price are for (2) each of the refills and include shipping by USPS standard mail. Be sure to specify blue or black, fine or medium when ordering.Contact me thru form below for other color options.